Amphenol Heavy Duty
Cylindrical Connectors
12-052-9
®
Amphenol
Inside Cover is Blank
Table of Contents Page
Amphenol® Heavy Duty Cylindrical Connectors, MIL-C-22992/Proprietary
Design Characteristics, Environmental Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Heavy Duty Cylindrical Connectors
MIL-C-22992, Class L
General Information, Design Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2, 3
How to Order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Contact Arrangements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5, 6
Alternate Insert Rotations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
MS90555 Wall Mount Receptacle (power source) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
MS90556 Straight Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
MS90557 Cable Connecting Receptacle without coupling ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
MS90558 Wall Mount Plug with coupling ring (equipment end) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Accessories - Contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Accessories - Contact Bushing/Removal Tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Accessories - Cable Strain Relief/Cable Sealing Gland . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Accessories - Protective Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Installation Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-19
Heavy Duty Cylindrical Connectors
MIL-C-22992, QWLD
General Information, Design Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
How to Order . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
MIL-C-22992, QWLD Insert Arrangement Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23, 24
QWLD Special Insert Arrangement Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Alternate Insert Rotations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
MIL-C-22992, QWLD Contact Arrangements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27-38
QWLD Special Contact Arrangements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39-47
QWLD Thermocouple Contact Arrangements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48-52
MS17343 or 10-1940XX Wall Mount Receptacle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
MS17345 or 10-1941XX Cable Connecting Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
MS17346 or 10-1942XX Box Mount Receptacle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
MS17347 or 10-1943XX Jam Nut Receptacle (Wall Mount) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
10-1944XX Thru-Bulkhead Receptacle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
MS17344 or 10-1946XX Straight Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
MS17348 or 10-1949XX Jam Nut Receptacle (Box Mount) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Accessories - M85049/X or 10-522958 Cable Sealing Adapters (Plug) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60-63
Accessories - M85049/X or 10-524959 Cable Sealing Adapters (Receptacle) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64-67
Accessories - Cable Clamp, Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68, 69
Accessories - Protective Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70, 71
Accessories - Sealing Gaskets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Accessories - Encapsulation Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Accessories - Encapsulation End Bell . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
MS Solder Contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Solderless Crimp Contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Application Tools (Crimp Type) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Heavy Duty Cylindrical Connectors
Proprietary, QWL Series
General Information, Design Features, (References Amphenol Catalog 12-053) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Sales Office Listing
Amphenol Aerospace is a Certified ISO 9001 Manufacturer
This catalog covers Amphenol® Heavy Duty/ Power Con-
nectors covered by MIL-C-22992.
The first section covers Class L Power Connectors, com-
plete with insert arrangements, accessories and assem-
bly instructions.
The second part covers our QWLD Heavy Duty Connec-
tors. This second part is made up of 3 sections, including
QWLD insert arrangements, connector shell styles and
accessories.
If more information is needed concerning our Heavy
Duty/Power Connectors, please contact:
Amphenol Corporation
Amphenol Aerospace
40-60 Delaware Avenue
Sidney, New York 13838-1395
Telephone: 607-563-5011
Fax: 607-563-5157
This catalog and other product literature from Amphenol
Aerospace and Amphenol Industrial Operations can be
viewed, saved, and down-loaded from our website:
www.amphenol-aerospace.com.
Due to space limitations, metric equivalents of dimensional data in this
catalog have not been included. All dimensions given may be converted
to the metric system by the standard formula; Dimension (inches) x
25.40 = dimension (millimeters).
1
• High Current Capacity
• Rugged Construction
• Safety
• Serviceability
Amphenol meets the demands for heavy duty connectors by
providing three cylindrical connector series, each with unique
design characteristics for reliable operation in specific indus-
trial environments.
Class “L” – for the heaviest electrical loads (Pages 2 – 19)
• Current range from 40 to 200 amperes
• Direct current or single/three phase, 60/400 Hertz alternat-
ing current
• Automatic grounding for safety
• MIL-C-22992 qualification
QWLD – for most power and control circuits (Pages 21 – 77)
• Military (MIL-C-22992) qualified connectors and industrial
equivalents available
• Increased shell size for greater durability than similar stan-
dard connectors
QWL – a more compact heavy duty design for industrial power and control applications
(Page 78, references Amphenol Catalog 12-053)
These three series share the following common characteristics which are critical to reliable heavy
duty connectors:
• Resistance to the operating environment. Refer to environmental data, below.
• Double stub coupling threads for faster connections; no cross threading, easy cleaning.
• Left hand accessory threads to minimize cable twisting, wire breakage, accidental connector
disassembly.
• Gaskets or O-rings at appropriate surfaces for perfect weathertight connections.
Amphenol® heavy duty connectors have been exposed to the following environmental conditions,
without compromise of mechanical integrity or degradation of electrical performance.
Condition Configuration Description Reference
Thermal Shock Unmated Five complete one hour temperature cycles of
–55°C to +125°C
MIL-STD-1344, method
1003, test condition A
Moisture Resistance
(Cable mounted connectors) Mated Ten complete 24 hour cycles of +25°C to
+65°C temperature at 90% to 98% humidity MIL-STD-202, method 106
Durability Mated 500 complete mating/unmating cycles MIL-C-22992
Salt Spray
(Corrosion) Unmated 48 hour exposure to atomized 5%
saline solution at +35°C
MIL-STD-1344,
method 1001
Vibration Mated
10 to 55 Hz, .06 inch total excursion
in 1 minute cycles for 6 hours, 55 to
2000 Hz, 10G peak amplitude sweep
MIL-STD-1344,
method 2005
High Impact Mated Nine hammer blows from 1, 3 and 5 feet,
three each in three axes on mounting panel
MIL-STD-202,
method 207
Heat Rise (Class L only) Mated Maximum rated DC current for four
hours at +25°C in still air MIL-C-22992
Fluid Immersion Unmated 20 hours immersion in hydraulic
fluid and lubricating oil MIL-C-22992
Water Immersion Mated and
Unmated
4 hours immersion at 1 atmosphere
pressure differential MIL-C-22992
Amphenol Heavy Duty
Cylindrical Connectors
MIL-C-22992/Proprietary
®
2
Amphenol Heavy Duty
Cylindrical Connectors
MIL-C-22992, Class L
wall mount receptacle (power source)
straight plug
cable connecting receptacle without
coupling ring
wall mount plug with
coupling ring (equipment end)
The Amphenol® Class L* heavy
duty connectors are the largest
size cylindricals, highly suitable for
industrial or military applications,
and designed to meet the demands
of heavy power interconnections.
The design features of this connec-
tor series provide:
• Greatest Capacity -
current ranges 40 to 200 amps,
conductor sizes 6 to 4/0
• Safety -
complete protection of personnel
and equipment if connectors are
inadvertently disconnected under
load
• Foolproof Mating -
design incorporates specific volt-
age, current, frequency, phase and
grounding requirements
• Standardization -
MIL-C-22992 Class L insert
arrangements specify connector/
cable combinations for maximum
reliability
• Serviceable Contacts -
contacts are normally crimped to
the cable before connector assem-
bly. No insertion tools required.
Bushings are available to adapt
smaller diameter wires to larger
contacts
* Amphenol design is covered by one or more of the
following U. S. Patent Numbers:
3,023,396; 3,221,292.
®
3
Amphenol Heavy Duty
Cylindrical Connectors
MIL-C-22992, Class L
Class L connectors are available only in the specific con-
figurations prescribed by MIL-C-22992 for either military
or industrial applications. This rigid configuration control
assures correct interconnection of electrical circuits for
maximum safety and reliability. Controlled parameters
include:
Connector shell style and contact type - wall mount
and cable connecting receptacles are supplied with
socket contacts only and always lead from the power
source. Plugs (with coupling rings) have pin contacts only
and always lead to the equipment end.
Shell size - the direct relationship of shell size to current
carrying capability reduces the possibility of inadequate
wiring for heavy electrical loads.†
Keyway position - four positions of the main keyway are
used to discriminate between the following power
sources:
two wire D.C
two wire single phase A.C.
three wire single phase A.C.
four wire three phase A.C.
Insert rotation - when carrying alternating current (A.C),
different angular rotations of the insert within the connec-
tor shell are used to distinguish between 60 Hertz and
400 Hertz circuits.
Shell Size
Current Rating
(Amperes) Contact Size
28 40 6
32 60 4
44 100 1/0
52 200 4/0
Other outstanding design features:
Arc quenching design - recessed socket contacts within
the insert create an arc suppressing chamber which pro-
tects the user when connectors are separated under
load.
Programmed coupling sequence - grounding and neu-
tral contacts engage before power contacts.
Waterproof design - a unique combination of grommets
and seals provides waterproofing in any condition -
mated or unmated, capped or uncapped.
Rugged construction - machined from high strength
aluminum. Straight-line attachment of accessories elimi-
nates possibility of cable twisting or misalignment.
Accessories - supplied with all Class L connectors as
indicated on the individual connector descriptions.
Replacement accessories may be ordered separately.
See pages 12 through 15.
† MIL-C-22992 includes shell size 48, rated at 150 amperes. Consult your local
Amphenol sales representative or Amphenol, Sidney, NY for availability.
®
4
MIL-C-22992, Class L
how to order
Connectors are supplied with removable contacts unassembled and applica-
ble accessories as listed in the individual connector style descriptions,
pages 8 through 11. Additional/replacement contacts or accessories may be
ordered by their MS designations.
Connectors are ordered by MS designation. To illustrate the ordering proce-
dure, part number MS90555 C32412SY is shown as follows:
PART NUMBER
MS90555 C32 412 S Y
1 234567
1. MS Number -
MS90555 designates wall mount receptacle (power source)
MS90556 designates straight plug
MS90557 designates cable connecting receptacle without coupling ring
MS90558 designates wall mount plug with coupling ring (equipment end)
2. Shell Finish - C (conductive) for AC or N (nonconductive) for DC circuits.
Grounding Assemblies: Finish C
Shell
Size
Current
Rating
Amps
Shell Master Key/Keyway Position
60Hz & 400Hz
1 Phase 3 Phase
2 Wire 3 Wire 3 Wire 4 Wire
120 VAC 240 VAC
120/240
VAC
450/480
VAC
120/208
VAC
240/416
VAC
277/480
VAC
28 40 4 (120°) 5 (135°) 4 (120°) --- 4 (120°) 5 (135°) 6 (150°)
32 60 4 (120°) 5 (135°) 4 (120°) --- 4 (120°) 5 (135°) 6 (150°)
44 100 4 (120°) --- 4 (120°) 1 (60°) 4 (120°) 5 (135°) 6 (150°)
52 200 --- --- 4 (120°) --- 4 (120°) 5 (135°) 6 (150°)
3. Shell Size - related directly to current carrying capability.
Size 28 - 40 amperes
Size 32 - 60 amperes
Size 44 - 100 amperes
Size 52 - 200 amperes
4. Master Key/Keyway Position - N designates normal position. Positions
1, 4, 5 and 6 of the master key/keyway prevent cross-mating of incompat-
ible voltages. Refer to the adjacent illustration.
5. Insert Arrangement - determined by connector size (current carrying
capability) and cable configuration to be accommodated. Refer to pages 5
& 6.
6. Contact Type - P for pin, S for socket. MS90555 and MS90557 are sup-
plied with socket contacts only. MS90556 and MS90558 are supplied with
pin contacts only.
7. Alternate Insert Rotation - used to prevent cross-mating of incompatible
frequencies. Absence of a letter in this space indicates normal (0°) posi-
tion of the insert. Refer to page 7.
Non-grounding Assemblies: Finish N
Shell
Size
Current
Rating
Amps
Shell Master/Key
Keyway Position
DC
2 Wire
28 VDC
28 40 N (105°)
32 60 N (105°)
44 100 N (105°)
52 200 N (105°)
4
5
6
N
Normal
1
MASTER
KEYWAY
TYPICAL
SOCKET
ARRANGEMENT
15
REF
front face of receptacle shown
Note that insert arrangement does not
rotate with master key/keyway
MASTER KEY/KEYWAY POSITION
Amphenol Federal Vendor Identification
FSCM77820
5
MIL-C-22992, Class L
contact arrangements
Shell Size 28, 40 amp rating Cable:
Contacts:
28-12 IPCEA, type G, round, four #8 conductors
28-13 CO-04 HDF, (4/6-4/12R) 1090
per MIL-C-3432
Position Size Pin
M39029/48
Socket
M39029/49
A, B, C 6-317 -329
N, G 6N -318 -329
28-12, 28-13
Three phase AC, 4 wire, grounding
Shell Size 32, 60 amp rating
32-04, 32-05
Single phase AC, 2 wire, grounding
Cable:
Contacts:
32-04 IPCEA, type G, round, two #6 conductors
32-05 CO-02 HDF, (2/4-2/8R) 1100
per MIL-C-3432
Position Size Pin
M39029/48
Socket
M39029/49
A 4 -320 -331
N 4N -321 -331
G1, G2 6N -318 -329
Shell Size 32, 60 amp rating
32-12, 32-13
Three phase AC, 4 wire, grounding
Cable:
Contacts:
32-12 IPCEA, type G, round, four #6 conductors
32-13 CO-04 HDF, (4/4-4/12R) 1290
per MIL-C-3432
Position Size Pin
M39029/48
Socket
M39029/49
A, B, C 4-320 -331
N 4N -321 -331
G 6N -318 -329
Shell Size 44, 100 amp rating
44-02, 44-03
28 Volts DC, 2 wire
Cable:
Contacts:
44-02 IPCEA, type W, round, two #2 conductors
44-03 CO-02 HDF, (2/1) 1385
per MIL-C-3432
Position Size Pin
M39029/48
Socket
M39029/49
A1/0-1 -323 -333
N1/0N-1 -324 -333
CONTACT LEGEND 64 1/04/0
IPCEA – Insulated Power Cable Engineers Association
AN
CB
G
G1
NA
G2
C
AN
B
G
A
N
6
MIL-C-22992, Class L
contact arrangements
Shell Size 44, 100 amp rating
44-12, 44-13
Three phase AC, 4 wire, grounding
Cable:
Contacts:
44-12 IPCEA, type G, round, four #2 conductors
44-13 CO-04 HDF, (4/1-4/8R) 1620
per MIL-C-3432
Position Size Pin
M39029/48
Socket
M39029/49
A, B, C 1/0-1 -323 -333
N1/0N-1 -324 -333
G1, G2, G3, G4 6G -319 -330
Shell Size 44, 100 amp rating
For Navy Ground Support Equipment use only.
44-50, 44-51, 44-52, 44-56
Three phase AC, 3 wire, grounding
Cable:
Contacts:
44-50 Available in MS90555 & MS90558 only
4 each # 1 conductors
44-51 Available in MS90556 & MS90557 only
IPCEA, type W, round, four # 1 conductors
44-52 Available in MS90556 only
IPCEA, type W, round, four # 2 conductors
44-56 Available in MS90556 only
IPCEA, type W, round, four # 6 conductors
Position Size Pin
M39029/48
Socket
M39029/49
A, B, C 1/0-1 -323 -333
G1/0N-1 -324 -333
Shell Size 52, 200 amp rating
52-12, 52-13
Three phase AC, 4 wire, grounding
Cable:
Contacts:
52-12 IPCEA, type G, round, four #4/0 conductors
52-13 CO-04 HDE, (4/0000-4/4R) 2380
per MIL-C-3432
Position Size Pin
M39029/48
Socket
M39029/49
A, B, C 4/0 -327 -335
N4/0N -328 -335
G1, G2, G3, G4 4G -322 -332
IPCEA – Insulated Power Cable Engineers Association
A
G4 G1
G3 G2
B
CN
A
GB
C
A
B
G4 G1
CN
G3 G2
CONTACT LEGEND 64 1/04/0
7
MIL-C-22992, Class L
alternate insert rotations
To avoid cross-plugging problems in applications requiring
the use of more than one connector of the same size and
arrangement, alternate insert rotations are available as
indicated in the accompanying chart.
As shown in the diagram below, the front face of the pin
insert is rotated within the shell in a clockwise direction
from the normal shell key. The socket insert would be
rotated counterclockwise the same number of degrees in
respect to the normal shell key.
Views looking into front face of pin insert or rear of socket insert.
Insert
Arrangements
Keying Position
(degrees from normal position)
DC or 60 Hz
Normal
400 Hz
WX Y Z
28-12 0 – – 180 –
28-13 0 – – 180 –
32-04 0 – 90 – –
32-05 0 – 90 – –
32-12 0 – – 180 –
32-13 0 – – 180 –
44-12 0 –––60
44-13 0 –––60
44-50 0 ––––
44-51 0 ––––
44-52 0 ––––
44-56 0 ––––
52-12 0 300 – – –
52-13 0 300 – – –
B
A
A
B
A
B
A
B
Position W Position X Position Y Position Z
8
J
.531
MIN
FULL
THD
F*
GN
GROMMET
GASKET
H
A
T
4 HOLES
S
R.312
+.011
–.010
.750 +.031
–.000
.031
±.005
MIL-C-22992, Class L
MS90555
wall mount receptacle (power source)
All dimensions for reference only.
To complete MS Part number see how to order, pg. 4.
Protective cover MS90563 is supplied as part of this connector assembly. Refer to page 15 for dimensions.
*F dimension applies only when rear nut is fully tightened
Shell
Size
A Thread
Class 2A
.1428P-.2857L
Double Stub
F*
±.031
G
Dia.
+.006
–.010
H
±.005
J
+.016
–.000
N
Dia.
+.011
–.020
R
(BSC)
S
+.021
–.020
T
Dia.
±.005
28 2.000 1.376 1.938 1.514 2.188 2.000 1.844 2.375 .177
32 2.250 1.376 2.188 1.514 2.188 2.250 2.062 2.625 .209
44 3.000 1.438 3.062 1.733 2.532 3.125 2.812 3.375 .281
52 3.500 1.438 3.562 1.733 2.532 3.625 3.156 3.875 .281
9
ML
"O" RING
K
MAIN JOINT
GASKET
C
Q
GLAND
.750 +.031
–.000
NE
A
MIL-C-22992, Class L
MS90556
straight plug
All dimensions for reference only.
Shell
Size
and
Arrangement
A Thread
Class 2B
.1428P-.2857L
Double Stub
C
Dia.
Max
E
Cable
Range
K
±.005
L
Max
Free
Length
M
Approx.
Free
Length
N
Dia
+.011
–.020
Q
Dia.
Max
28-12 2.000 2.439 1.047-.922 1.557 8.188 7.188 2.000 2.312
28-13 1.130-1.005 7.188
32-04
2.250 2.689
.969-.844
1.557 8.188
7.188
2.000 2.56232-05, -12 1.130-1.005 7.188
32-13 1.342-1.217 8.688
44-02
3.000 3.667
1.312-1.187
1.776 10.172
10.688
2.500 3.531
44-03 1.438-1.313 9.688
44-12 1.516-1.391 10.688
44-13 1.672-1.547 12.688
44-51
3.000 3.667
1.734-1.609
1.776 10.172
11.688
2.500 3.53144-52 1.525-1.435 11.188
44-56 1.135-1.065 7.188
52-12 3.500 4.167 2.328-2.183 1.776 11.109 17.188 3.250 4.016
52-13 2.453-2.308 18.188
To complete MS Part number see how to order, pg. 4.
Protective cover MS90564 is supplied as part of this connector assembly. Refer to page 15 for dimensions.
Contact brushings MS3348 are supplied as part of connector as required. Refer to page 13 for dimensions.
10
MIL-C-22992, Class L
MS90557
cable connecting receptacle without coupling ring
All dimensions for reference only.
To complete MS Part number see how to order, pg. 4.
Protective cover MS90563 is supplied as part of this connector assembly. Refer to page 15 for dimensions.
Contact bushings MS3348 are supplied as part of connector as required. Refer to page 13 for dimensions.
Shell
Size
and
Arrangement
A Thread
Class 2A
.1428P-.2857L
Double Stub
B
±.005
C
Dia.
Max.
E
Cable
Range
L
Max
Free
Length
M
Approx.
Free Length
N
Dia
+.011
–.020
28-12 2.000 1.514 2.439 1.047-.922 8.156 7.188 2.000
28-13 1.130-1.005 7.188
32-04
2.250 1.514 2.689
.969-.844
8.156
7.188
2.00032-05, -12 1.130-1.005 7.188
32-13 1.342-1.217 8.688
44-02
3.000 1.733 3.667
1.312-1.187
10.125
10.688
2.500
44-03 1.438-1.313 9.688
44-12 1.516-1.391 10.688
44-13 1.672-1.547 12.688
44-51 1.734-1.609 11.688
52-12 3.500 1.733 4.167 2.328-2.183 11.062 17.188 3.250
52-13 2.453-2.308 18.188
L
CM
N
E
GLAND
"O" RING
.750 +.031
–.000
B
A
.531
MIN FULL THD
11
JF
T
4 HOLES
S
R
Q
INTERFACIAL
SEAL
MAIN JOINT
GASKET
A
K
.750 +.031
–.000
.312+.011
–.010
.031
±.005
GASKET
GROMMET
NG
MIL-C-22992, Class L
MS90558
wall mount plug with coupling ring (equipment end)
To complete MS part number see how to order, pg. 4.
Protective cover MS90564 is supplied as part of this connector assembly. Refer to page 15 for dimensions.
* F dimension applies only when rear nut is fully tightened.
Shell
Size
A Thread
Class 2B
.1428P-.2857L
Double Stub
J
±.031
G
Dia
+.006
–.010
F*
+.016
–.000
K
±.005
N
+.011
–.020
Q
Dia.
Max
R
(BSC)
S
+.021
–.020
T
Dia.
±.005
28 2.000 .959 1.938 2.639 1.557 2.000 2.312 1.844 2.375 .177
32 2.250 .959 2.188 2.639 1.557 2.250 2.562 2.062 2.625 .209
44 3.000 1.021 3.062 2.998 1.776 3.125 3.531 2.812 3.375 .281
52 3.500 1.021 3.562 2.998 1.776 3.625 4.016 3.156 3.875 .281
All dimensions for reference only.
12
A
REF
B
CH
.750
+.031
–.000
G
D
K
REF
.750
+.031
–.000
J
HC
G
MIL-C-22992, Class L Accessories
contacts
All dimensions for reference only.
*Order by MS part number listed for either socket or pin.
Socket
MS Part
Number*
Pin
MS Part
Number
Contact
Size
Wire
Well
Size
A
Ref.
B
±.005
C
Dia
D
Dia
±.001
G
Dia
H
Dia
J
±.005
K
Ref
M39029/49-335 M39029/48-327 4/0 4/0 3.207 2.097 .641 +.004
–.003 .500 .781 ± .003 .750 +.004
–.003 1.283 2.393
--- M39029/48-328 4/0N 4/0 3.325 2.215 .641 +.004
–.003 .500 .781 ± .003 .750 +.004
–.003 --- ---
M39029/49-333 M39029/48-323 1/0 1 3.207 2.097 .406 +.004
–.003 .357 .609 ± .003 .506 +.004
–.003 1.283 2.393
--- M39029/48-324 1/0N 1 3.325 2.215 .406 +.004
–.003 .357 .609 ± .003 .506 +.004
–.003 --- ---
M39029/49-331 M39029/48-320 4 4 2.786 1.738 .281 ±.002 .225 .417 ± .002 .374 ± .002 1.158 2.206
--- M39029/48-321 4N 4 2.904 1.856 .281 ±.002 .225 .417 ± .002 .374 ± .002 --- ---
M39029/49-329 M39029/48-317 6 6 2.786 1.738 .234 ±.002 .178 .342 ± .002 .312 ± .002 1/158 2.206
--- M39029/48-318 6N 6 2.904 1.856 .234 ±.002 .178 .342 ± .002 .312 ± .002 --- ---
M39029/49-332 M39029/48-322 4G 4 2.856 1.746 .281 ±.002 .225 .417 ± .002 .374 ± .002 1.752 2.862
M39029/49-330 M39029/48-319 6G 6 2.856 1.746 .234 ±.002 .178 .342 ± .002 .312 ± .002 1.752 2.862
M39029/48
pin contact
M39029/49
socket contact
13
.700 +.017
–.016
BA
A
2.500 ±.016
MIL-C-22992, Class L Accessories
contact bushing/removal tool
MS3348
contact bushing
All dimensions for reference only.
* Order by MS part number listed.
MS Part
Number*
Contact
Wire
Barrel
Size
(Ref)
Wire
Size
(Ref)
A
Dia
+.010
–.003
B
Dia
+.002
–.003
MS3348-1 - 2L 1 2 .359 .396
MS3348-4 - 5L 4 5 .250 .272
MS3348-4 - 6L 4 6 .225 .272
MS3348-6 - 8L 6 8 .185 .225
MS3348-6 - 9L 6 9 .155 .225
MS3348-1 - 6L 1 6 .225 .396
MS3348-4 - 8L 4 8 .185 .272
MS3348-6 -10L 6 10 .136 .225
MS3348-4/0-2/0L 4/0 2/0 .500 .629
MS90562
contact removal tool
All dimensions for reference only.
* Order by MS part number listed.
MS Part
Number*
Contact
Size
A
Dia
+.000
–.002
MS90562-1 4/0 .790
MS90562-2 2/0 .696
MS90562-3 1/0 .558
MS90562-4 2 .462
MS90562-5 4 .376
MS90562-6 6 .354
14
MIL-C-22992, Class L Accessories
cable strain relief/cable sealing gland
MS90561
cable strain relief
All dimensions for reference only.
* Order by MS part number listed.
MS
Part
Number*
Arrange-
ment
Number
A
Dia
+.000
–.010
H
Dia
Cable Range L
Approx.
Max Min
MS90561-2 28-13,
32-12 1.797 1.145 1.003 8.000
MS90561-4 28-02, -04 1.797 .844 .688 7.500
MS90561-12 28-12 1.797 1.047 .891 8.000
MS90561-13 32-13 1.797 1.342 1.185 9.500
MS90561-15 44-12 2.235 1.516 1.360 11.500
MS90561-16 44-13 2.235 1.688 1.531 13.500
MS90561-17 52-12 2.922 2.328 2.039 18.000
MS90561-18 52-13 2.922 2.500 2.211 19.000
MS90561-19 44-51 2.235 1.750 1.550 12.500
MS90561-20 44-52 2.235 1.578 1.375 12.000
MS90561-21 44-56 2.235 1.160 1.010 8.000
MS23747
cable sealing gland
All dimensions for reference only. This gland must be used with MS90561 strain relief.
* Order by MS part number listed.
MS
Part
Number*
Arrange-
ment
Number
A
Dia
+.000
–.020
B
Dia
+.020
–.000
C
±.010
Min
Cable
Dia
Ref.
MS23747-2 28-13,
32-05, -12 1.805 1.130 1.034 1.005
MS23747-12 28-12 1.805 1.047 1.034 .922
MS23747-13 32-13 1.805 1.342 1.034 1.217
MS23747-14 44-03 2.242 1.438 1.160 1.313
MS23747-15 44-12 2.242 1.516 1.160 1.391
MS23747-16 44-13 2.242 1.672 1.160 1.547
MS23747-18 52-12 2.927 2.328 1.284 2.183
MS23747-19 52-13 2.927 2.453 1.284 2.308
MS23747-20 44-51 2.242 1.734 1.160 1.609
MS23747-21 44-52 2.242 1.562 1.160 1.437
MS23747-22 44-56 2.242 1.150 1.160 1.025
H
LA
CA
B
15
MIL-C-22992, Class L Accessories
protective covers
MS90563 protective covers
used with: MS90555 wall mount receptacle
MS90557 cable connecting receptacle
All dimensions for reference only.
* To complete MS part number, add letter C (Conductive) for AC or N
(Non-conductive) for DC connector assemblies.
MS
Part
Number*
Use
with
Shell
Size
A Thread
Class 2B
.1428P-.2857L
Double Stub
B Dia
Ref
C
Approx.
For
MS90555
For
MS90557
MS90563-1( ) 28 2.000 .177 .177 6.000
MS90563-3( ) 32 2.250 .209 – 4.500
MS90563-4( ) 32 2.250 – .177 6.000
MS90563-7( ) 44 3.000 .281 .281 7.500
MS90563-11( ) 52 3.500 .281 .281 7.500
MS90564 protective covers
used with: MS90556 straight plug
MS90558 wall mount plug
All dimensions for reference only.
* To complete MS part number, add letter C (Conductive) for AC or N
(Non-conductive) for DC connector assemblies.
MS Part
Number*
Use
with
Shell
Size
A Thread
Class 2A (Plated)
.1428P-.2857L
Double Stub
B Dia
Ref
C
Approx.
J
Max
For
MS90556
For
MS90558
MS90564-1( ) 28 2.000 .177 .177 7.500 2.266
MS90564-3( ) 32 2.250 – .209 6.000 2.266
MS90564-4( ) 32 2.250 .177 – 7.500 2.266
MS90564-7( ) 44 3.000 .281 .281 8.500 2.484
MS90564-11( ) 52 3.500 .281 .281 8.500 2.484
A
GASKET
.969
MAX
C
B
J
A
RIVET
C
B
16
MIL-C-22992, Class L
installation instructions
Complete installation instructions (L-1014) for Class L connectors are available on
request. Reproduced below are condensed assembly instructions to familiarize the
user with the installation procedure and tooling required.
Cable Preparation (MS90556 and MS90557 connectors only)
The following table shows the standard wire color coding, generator terminal mark-
ings, and connector contact identification used with Class L connectors.
Standardized Generator Wiring and Connections
Step 1) Determine cable lay to facilitate alignment of contacts and insert holes
without wire crossing.
Step 2) Strip cable jacket to dimension shown. Avoid cutting or nicking individual
conductor insulation.
Generator
Terminal Marking Current
Contact
Designation
Conductor
Circuit Wire Color
+ (POS)
– (NEG) ground
28Vdc
28Vdc
A
N
Positive
Negative
Black
White
L1
L2
L3
L0
G (or Gnd)
AC
AC
AC
AC
AC
A
B
C
N
G
Phase A
Phase B
Phase C
Neutral
Safety grounding
Black
Red
Blue (Commercial may be orange)
White
Green (Commercial may be bare)
Connector
Size
D
Inches
Approx.
28 3.000
32 3.000
44 4.250
52 5.000
Note
Some insert arrangements require that two or more ground wires be termi-
nated into one contact. Dimension D must therefore be increased to permit
routing these wires around the larger conductors.
Step 3) Install connector components in the order shown in the applicable assem-
bly view illustrated on pages17 and 18.
Step 4) Strip insulation of individual conductors to 3/4 inch from end of conductor.
DSEE
NOTE
OUTER
JACKET
17
21
54 3
MS90555 Connector
MS90556 Connector
MIL-C-22992, Class L
installation instructions
Wall Mount Receptacle Components:
1. Shell
2. Insert Assembly, Socket
3. Contact, Socket
4. Grommet Assembly, Socket
5. Nut, Retaining
6. Protective Cap Assembly (Not Shown)
7. Flange Gasket (Not Shown)
Straight Plug Components:
1. Shell and Coupling Nut Assembly
2. Insert Assembly, Pin
3. Contact, Pin
4. Spacer Assembly, Pin
5. Back Adapter
6. Gland Washer
7. Gland
8. Cable Grip
9. Gland Nut
10. Lockwasher (3 each)
11. Screw (3 each)
12. Protective Cap Assembly (Not Shown)
Note: On shell size 32 connectors, item #6 (Gland Washer) is contained within item #5 (Back Adaper).
18
2
543 1
98 7 6 5
11 10
43 2 1
MIL-C-22992, Class L
installation instructions
Cable Connecting Receptacle
Components:
1. Shell
2. Insert Assembly, Socket
3. Contact, Socket
4. Spacer Assembly, Socket
5. Back Adapter
6. Gland Washer
7. Gland
8. Cable Grip
9. Gland Nut
10. Lockwasher (3 each)
11. Screw (3 each)
12. Protective Cap Assembly (Not shown)
Wall Mount Plug Components:
1. Shell and Coupling Nut Assembly
2. Insert Assembly, Pin
3. Contact, Pin
4. Grommet Assembly, Pin
5. Nut, Retaining
6. Protective Cap Assembly (Not Shown)
7. Flange Gasket (Not Shown)
Note: On shell size 32 connectors, item #6 (Gland Washer) is contained within item #5 (Back Adaper).
MS90557 Connector
MS90558 Connector
19
MIL-C-22992, Class L
installation instructions
Contact Installation
Step 1) Insert stripped conductors in contact wirewells.
If contact bushing is used, insert conductor in bushing
and bushing in contact wirewell. If two or more ground
wires are inserted into a single contact, make sure all
wires are fully seated in wirewell.
Step 2) Select correct crimping tool, locater and die
combination from the table for contacts to be installed.
With conductor or contact bushing in place, insert contact
into tool. Close crimping die fully to form a uniform crimp.
* Available from Pico Crimping Tools Co.,
9832 Jersey Ave.
Santa Fe Springs, CA 90670
Phone: 805-388-5510
If crimping tools are available, contacts may be affixed to
conductors by soldering. Use rosin-alcohol solder flux, a
good grade of 60/40 solder and a 500 watt soldering iron
or probe type resistance soldering equipment. Pre-tin
conductors before soldering. Solder must not be present
on shoulder or retention area of contact.
Contact
Part
Number
Size Type Crimping
Tool* Locator* Die* Removal
Tool
M39029/48-327
M39029/49-335
M39029/48-328
4/0
4/0
4/0N
P
S
P
Pico Model
400B or
400B-1
4297-1 414DA-4/0N-1 MS90562-1
M39029/48-323
M39029/49-333
M39029/48-324
1/0
1/0
1/0N
P
S
P
Pico Model
400B or
400B-1
4297-3 414DA-1/0N MS90562-3
M39029/48-320
M39029/49-331
M39029/48-321
M39029/48-322
M39029/49-332
4
4
4N
4G
4G
P
S
P
P
S
Pico Model
400B or
400B-1
4297-5 414DA-4N MS90562-5
M39029/48-317
M39029/49-329
M39029/48-318
M39029/48-319
M39029/49-330
6
6
6N
6G
6G
P
S
P
P
S
Pico Model
400B or
400B-1
4297-6 414DA-6N MS90562-6
Connector Assembly
Step 1) If inserts are not already positioned in the con-
nector shell, align large tab on insert with large slot in
shell and push insert in until it bottoms in shell.
Step 2) Apply a thin coating of Dow Corning DC-4 lubri-
cant to the periphery of contact holes in spacer or grom-
met assembly. Push contacts into rear of spacer or
grommet assembly until locked into contact retainer
bushing.
Step 3) Align contacts with proper holes in insert. Small
key of insert must be aligned with appropriate keyway in
spacer or grommet assembly. Slide contacts into insert
holes until spacer or grommet assembly butts against
insert. A thin film of Dow Corning DC-4 lubricant applied
to the periphery of insert contact holes will provide maxi-
mum sealing efficiency.
Step 4) Assemble accessories to connector. The back
adapter “O” ring should have a very thin film of Dow
Corning DC-4 lubricant applied. Outer surfaces only of
gland should be lubricated with a thin film of UniTemp
Grease EP. Avoid getting grease on inside surfaces of
gland and on cable jacket.
Step 5) Tighten retaining nut or gland nut on shell or
adapter. A metal-to-metal seating condition is desireable,
but may not be attainable with maximum cable diameters.
Contact Removal
Step 1) Loosen all rear accessories and slide back along
cable.
Step 2) Remove spacer or grommet assembly with con-
tacts from connector insert.
Step 3) Using the appropriate size contact removal tool,
push tool over front of contact until it bottoms in spacer or
grommet assembly hole. This will open contact retaining
bushing and allow contact to be removed from the spacer
or grommet assembly from the rear. When using jacketed
cable, all contacts should be released from contact reten-
tion bushings before removal from spacer or grommet
assembly is accomplished.
20
Heavy Duty
Cylindrical
MIL-C-22992
QWLD
21
Amphenol Heavy Duty
Cylindrical Connectors
MIL-C-22992, QWLD
wall mount receptacle
cable connecting plug
box mount receptacle
jam nut receptacle
(wall mount)
thru bulkhead receptacle
straight plug
jam nut receptacle
(box mount)
Amphenol® QWLD Series heavy duty
cylindrical connectors provide reliable
power and control functions in hostile
environments where ordinary connec-
tors cannot survive.
Design features of this connector series
provide:
• High Durability - water and explosion
proof, resistant to abrasion, corrosion,
vibration and shock
• Quick, Positive Mating - double stub
threads per MIL-STD-1373 for fast cou-
pling, easily cleaned
• Selection - over 300 industrial and MS-
approved insert patterns available,
including coaxial and thermocouple
On the drilling platform in the North Sea,
pump and motor generator controls run
smoothly, although constantly exposed to
salt spray.
At Prudhoe Bay where the nights are six
months long, portable lighting systems per-
mit operation regardless of temperature
plummeting to 50° below zero.
The circus ferris wheel runs continuously
despite the fact that it has rained for five
days and all power connections are lying in
six inches of mud.
These situations are typical of the extreme
conditions under which thousands of
Amphenol QWLD connectors are operating
daily. Outstanding design features that
make these cylindricals a necessity for diffi-
cult applications include:
•Alumilite 225* hard anodic finish for
abrasion and corrosion resistance or
conductive cadmium plate
•Resilient inserts for moisture sealing,
positive proof against shock and vibra-
tion
•Sealing gaskets at every joint for water-
proof assembly
•Cable strain relief provided by clamp bar
type accessories
•Left hand accessory threads to prevent
damage from disconnect torque applied
in the wrong direction
•Closed entry socket contact design in
solder or replaceable crimp contacts
* Registered trademark of Aluminum
Company of America
®
22
MIL-C-22992, QWLD
how to order
MS-APPROVED CONNECTORS
To illustrate the ordering procedure, part number
MS17343R20N27PW is shown as follows:
PART NU MB ER
MS17343 R20 N27 P W
1 234567
1. MS Number -
MS17343 designates wall mount receptacle
MS17344 designates straight plug
MS17345 designates cable connecting plug
MS17346 designates box mount receptacle
MS17347 designates jam nut receptacle with rear
accessory threads (wall mount)
MS17348 designates jam nut receptacle (box mount)
2. Class -
C designates pressurized - used where circuit integrity is pro-
tected by a pressure differential
R designates environmental - see table, page 1
3. Shell Size - available in shell sizes 12 through 44. Refer to
pages 53 through 59 for dimensional data.
4. Shell Finish - C for conductive or N for non-conductive
5. Insert Arrangement - current MS insert arrangements are
shown in black in the QWLD insert arrangements section of
this catalog. Only these arrangements are available in MS-
approved connectors.
6. Contact Type - P for pin, S for socket
7. Alternate Insert Rotation - used to prevent cross-mating of
connectors. Absence of a letter in this space indicates normal
(0°) position of the insert. Refer to page 26 for alternate insert
rotation illustrations.
QWLD INDUSTRIAL VERSIONS
These heavy duty connectors are identical to MS-approved types
except for the added flexibility of connector shell and contact type
and finish options, plus added insert arrangements. To illustrate
the ordering procedure, part number 10-194622-14S is shown as
follows:
PART NUMBER
10 – 194 6 22-14 S
1234 5
1. Base Number Prefix - used to define connector shell finish
and contact type and finish
10 - Solder type contacts, silver plated
75- Crimp type contacts, silver plated
81- Crimp type contacts, plated .0001 gold over silver
82- Crimp type contacts for MIL-C-13777 cable, silver plated
83- Crimp type contacts for MIL-C-13777 cable,
plated .0001 gold over silver
85- Crimp type contacts, plated .00005 gold over silver
All above prefix numbers utilize connector shells with Alumi-
lite* non-conductive finish
88- Solder type contacts, silver plated. Connector shell
utilizes olive drab cadmium plate over nickel
conductive finish.
2. Base Number - QWLD Series Heavy Duty Cylindrical Con-
nector
3. Shell Style -
0 designates wall mount receptacle
1 designates cable connecting plug
2 designates box mount receptacle
3 designates jam nut receptacle with rear accessory threads
(wall mount)
4 designates thru bulkhead receptacle
6 designates straight plug
9 designates jam nut receptacle (box mount)
4. Shell Size/Insert Arrangement - Amphenol® QWLD connec-
tors are available in equivalent MS shell sizes with all current
MS insert arrangements as well as a large selection of special
arrangements for power and signal circuits. Select the
required insert arrangement number from those shown in
black (MS arrangements) or red (industrial arrangements).
5. Contact Type/Alternate Insert Rotation - P for pin, S for
socket. When an alternate position of the connector insert is
required to prevent cross-mating of connectors, a different let-
ter (other than P or S) is used. Select from the table below the
Amphenol® letter which indicates both type of contact and
insert rotation desired. Refer to page 26 for alternate insert
rotation illustrations.
Alumilite is a registered trademark of Aluminum Co. of America
Pin Contacts Socket Contacts
MS Letters Amphenol® Letters MS Letters Amphenol® Letters
P P (normal) S S (normal)
PW G SW H
PX I SX J
PY K SY L
PZ M SZ N