3
* When tested using silver plated wire.
** Please note that the establishment of electrical safety factors is left entirely in the designer’s hands, since he is in the best position to know what peak voltage, switching
surges, transients, etc. can be expected in a particular circuit.
CONTACT RATING
Contact
Size
Tes t C u r re n t Maximum
Millivolt Drop
Crimp*
Maximum
Millivolt Drop
Contact
Size
Crimp Well Data Solder Well Data
Solder &
Crimp Hermetic Solder* Hermetic*
Well
Diameter
Nominal
Well Depth
Well
Diameter
Nominal
Well Depth
22M 3 2 45 20 60 22M .028 ±.001 .141 .029 +.004
–.000
22D 5 3 73 85 22D .0345 ±.0010 .141
22 5 3 73 20 85 22 .0365 ±.0010 .141 .036 +.004
–.000 .094
20 7.5 5 55 20 60 20 .047 ±.001 .209 .044 +.004
–.004 .125
16 13 10 49 20 85 16 .067 ±.001 .209 .078 +.000
–.004 .141
12 23 17 42 20 85 12 .100 ±.002 .209 .116 +.004
–.002 .141
10 (Power) 33 NA 33 NA NA 10 (Power) .137 ±.002 .355 NA NA
SERVICE RATING**
Service
Rating
Suggested Operating Voltage
(Sea Level) Test Voltage
(Sea Level)
Test Voltage
50,000 Ft.
Test Voltage
70,000 Ft.
Test Voltage
110,000 Ft.AC (RMS) DC
M 400 500 1300 VRMS 550 VRMS 350 VRMS 200 VRMS
N 300 450 1000 VRMS 400 VRMS 260 VRMS 200 VRMS
I 600 850 1800 VRMS 600 VRMS 400 VRMS 200 VRMS
II 900 1250 2300 VRMS 800 VRMS 500 VRMS 200 VRMS
FINISH DATA
Aluminum Shell Components Non-Hermetic
Finish
Suffix Indicated Finish Standard for
JT Types Listed Below
Indicated Finish Standard for
LJT Types Listed BelowMilitary Proprietary
Cadmium Plated Nickel Base MS (A) – JT/JTG/JTL/JTP LJT/LJTP
Anodic Coating (Alumilite) MS (C) (005) JTS/JTPS/JTLS LJTPS/LJTS
Chromate Treated (Iridite 14-2) (011) JTN/JTPN/JTLN LJTN/LJTPN
Olive Drab Cadmium Plate Nickel Base MS (B) (014)
Electroless Nickel MS (F) (023)
Hermetic Connectors
Material/Finish
Suffix Indicated Finish Standard for
JT Types Listed Below
Indicated Finish Standard for
LJT Types Listed BelowMilitary Proprietary
Carbon Steel Shell
Tin Plated Shell and Contacts
JT()H/JT()Y
JTL( )H/JTL( )Y LJT( )Y/LJT( )H
Carbon Steel Shell
Tin Plated Shell and Gold Plated Contacts MS (D)
Stainless Steel Shell
Gold Plated Contacts MS (E) (162) JTS( )Y
JTLS( )Y LJTS( )Y
JT/LJT
specifications
4
JT LJT Solder Crimp
Hermetics
Service
Rating
Total
Con-
tacts
Contact Size
Class
H
Class
Y* 22D 22M 22 20 16 12
8
(Coax)
8-2 P M2 2
8-3 X N/A P P M3 3
9-3 X
8-6 X X P P M6 6
9-6 X X P P
M7 7
9-7 X
I2 2
9-22 X
8-35 X P P M66
9-35 X P P
8-44 X P P M4 4
9-44 X
8-97 X M4 2 2
8-98 S X P P I3 3
9-98 X X P P
I2 2
11-2★2P**
10-4 3 I4 4
11-4 X 2
10-5 X X P P I5 5
11-5 X 2
I6 6
11-6 S
10-13 X X P P M13 13
11-13 X X P P
10-35 X P P M1313
11-35 X P P
10-98 X X P/S P I6 6
11-98 X X P P
10-99 X P P I7 7
11-99 P
12-3 X X P P II 3 3
13-3 P
12-4 X X P P I4 4
13-4★XXP/SP
12-8 X X P P/S I8 8
13-8 X X P P
12-22 X P P M22 22
13-22 X X P/S P
12-35 X P P M2222
13-35 X P P
12-98 X X P/S P I10 10
13-98 X X P/S P
14-4 2 I4 4
15-4 3
14-5 X X P P II 5 5
15-5★XX
14-15 X X P/S P I15 141
15-15 X X P/S P
14-18 X X P/S P I18 18
15-18 X X P/S P
14-19 X 3 I19 19
15-19 2
14-35 X P P M3737
15-35 X P P
14-37 X X P P M37 37
15-37 X X P P
14-68 2 18 8
15-68 X 3
14-97 2 P P I12 84
15-97 X 2 P P
JT/LJT
insert availability and identification,
alternate positioning
A plug with a given rotation letter will mate with a receptacle
with the same rotation letter. The AB angle for a given connec-
tor is the same whether it contains pins or sockets. Only the
master key/keyway rotates in the shell, and the insert always
remains in the same position relative to the minor keys.
AB angles shown are viewed from the front face of the connec-
tor, a receptacle is shown below. The angles for the plug are
exactly the same except the direction of rotation is opposite of
that shown for the receptacle.
JT MASTER KEY/KEYWAY ROTATION
AB ANGLE OF ROTATION (Degrees)
Shell
Size Normal A B C D
8100° 82° – – 118°
10 100° 86° 72° 128° 114°
12 100° 80° 68° 132° 120°
14 100° 79° 66° 134° 121°
16 100° 82° 70° 130° 118°
18 100° 82° 70° 130° 118°
20 100° 82° 70° 130° 118°
22 100° 85° 74° 126° 115°
24 100° 85° 74° 126° 115°
RELATIVE POSSIBLE POSITION
OF ROTATED MASTER KEYWAY
(front face of receptacle shown)
(P) Pin inserts only (consult Sidney, NY for socket availability)
(S) Socket inserts only (consult Sidney, NY for pin availability)
(2) Not tooled for RP or 02RE
(3) Pin inserts only, not tooled for RP or 02RE (consult Sidney, NY for availability)
* Same as H with interfacial seal
** Tooled with special terminal only (consult Sidney, NY for availability of standard
terminal)
★Ground plane proprietary option available. See page 51 for further information on
ground plane connectors.
10° JT REF
5
(P) Pin inserts only (consult Sidney, NY for socket availability)
(S) Socket inserts only (consult Sidney, NY for pin availability)
(2) Not tooled for RP or 02RE
JT LJT Solder Crimp
Hermetics
Service
Rating
Total
Con-
tacts
Contact Size
Class
H
Class
Y* 22D 22M 22 20 16 12
8
(Coax)
8
(Twinax)
M3938 1
17-2 2
16-6 X P P I6 6
17-6 X P P
16-8 X X P P II 8 8
17-8★XXPP/S
16-13 2 I13 13
17-13 2
Coax 4 2
Coax 2
17-22
M2422 2
17-25 2
16-26 X X P/S P I26 26
17-26 X X P/S P
16-35 X P/S P M5555
17-35 X X P P
16-42 X M42 42
17-42 P
16-55 X X P/S P M55 55
17-55 X X P
16-99 X X P P I23 212
17-99 X X S
18-11 X X P P II 11 11
19-11★XXPP
M1814 4
19-18 2
18-28 X X P P I28 262
19-28 X P
18-30 X X I30 291
19-30 X P
18-32 X X P/S P I32 32
19-32 X X P/S P
18-35 X P P M6666
19-35 X P P
18-53 X X M53 53
19-53 P
18-66 X X P P M66 66
19-66 X P P
M67 67
19-67 X 3 S
18-68 2 I18 18
19-68 3
18-96 2 I9 9
20-1 X P M79 79
21-1 X S
20-2 X M65 65
21-2 2
20-11 3 I11 11
21-11★2
20-16 X X P P II 16 16
21-16★XXPP
I24 24
21-24 X
I25 25
21-25 X
I27 27
21-27 X
20-35 X M7979
21-35 X
20-39 X X P P I39 372
21-39 X X
20-41 X X P P I41 41
21-41 X X S
JT/LJT
insert availability and identification,
alternate positioning
(3) Pin inserts only, not tooled for RP or 02RE (consult Sidney, NY for availability)
* Same as H with interfacial seal
★Ground plane proprietary option available. See page 51 for further information on
ground plane connectors.
A plug with a given rotation letter will mate with a receptacle
with the same rotation letter. The AB angle for a given connec-
tor is the same whether it contains pins or sockets. Only the
master key/keyway rotates in the shell, and the insert always
remains in the same position relative to the minor keys.
AB angles shown are viewed from the front face of the connec-
tor, a receptacle is shown below. The angles for the plug are
exactly the same except the direction of rotation is opposite of
that shown for the receptacle.
LJT MASTER KEY/KEYWAY ROTATION
AB ANGLE OF ROTATION (Degrees)
Shell
Size Normal A B C D
995° 77° – – 113°
11 95° 81° 67° 123° 109°
13 95° 75° 63° 127° 115°
15 95° 74° 61° 129° 116°
17 95° 77° 65° 125° 113°
19 95° 77° 65° 125° 113°
21 95° 77° 65° 125° 113°
23 95° 80° 69° 121° 110°
25 95° 80° 69° 121° 110°
RELATIVE POSSIBLE POSITION
OF ROTATED MASTER KEYWAY
(front face of receptacle shown)
5° LJT REF
6
JT LJT Solder Crimp
Hermetics
Service
Rating
Total
Con-
tacts
Contact Size
Class
H
Class
Y* 22D 22M 22 20 16 12
8
(Coax)
8††
(Twinax)
10
(Power)
12
Coax
N4
21-75★2
II 19 17
21-79 2
22-1 X M 100 100
23-1 X
22-2 X X P P M85 85
23-2 X X P P
M5 5
23-5 X
M6 6
23-6★P
22-14 2 I14 14
23-14 2
22-21 X X P P II 21 21
23-21★XXPP
22-32 X X P I32 32
23-32 X P
I34 34
23-34 X
22-35 X M 100 100
23-35 X
I36 36
23-36 X
22-53 P I53 53
23-53 X X P/S
22-55 X X P P I55 55
23-55 3
II 16 16
23-97 X
II 11 11
23-99 X
24-1 X M 128 128
25-1 X
24-2 X M 100 100
25-2 X
24-4 X P P I56 48 8
25-4 X
M9997 2
25-7 2
N11 2 9
25-11 2
24-19 2 I19 19
25-19★2
N 30 10 13** 3 4
25-20 2
24-24 X P P I24 1212
25-24★X
24-29 X I29 29
25-29★XX
24-35 X M 128 128
25-35 X
24-37 2 I37 37
25-37★2
24-43 3 I43 2320
25-43 X 2 P P
I46 40 4 2†
25-46 2
24-61 X X P P I61 61
25-61 X X P P
JT/LJT
insert availability and identification
(P) Pin inserts only (consult Sidney, NY for socket availability)
(S) Socket inserts only (consult Sidney, NY for pin availability)
(2) Not tooled for RP or 02RE
(3) Pin inserts only, not tooled for RP or 02RE (consult Sidney, NY for availability)
* Same as H with interfacial seal
** Two size 16 contacts dedicated to fiber optics. Consult Sidney, NY or catalog
section 12-352 for fiber optic contact information.
† For RG180/U and RG195/U cables only (consult Sidney, NY for other cable
applications)
†† Size 8 Coax and Twinax are interchangeable
(4) MS connector 21-75 is supplied with four size 8 twinax contacts. Proprietary
connector 21-75 is supplied with four size 8 coax contacts.
(5) MS connector 21-79 has provision for two size 8 coax contacts. Coax contacts
are not supplied unless specified by customer.
★Ground plane proprietary option available. See page 51 for further information
on ground plane connectors.
(See Note 4)
(See Note 5)
7
black arrangements – JT or LJT
green arrangements – JT only
blue arrangements – LJT only
front face of pin inserts illustrated
Insert Arrangement (JT) 8-2 8-3 8-6 8-35 8-44 8-97 8-98
Insert Arrangement (LJT) 9-3 9-6 9-7 9-22 9-35 9-44 9-98
Service Rating MMMM I MMM I
Number of Contacts 2367264223
Contact Size 20 20 22M 22M 20 22D 22 22M 20 20
Insert Arrangement (JT) 10-4 10-5 10-13 10-35 10-98 10-99
Insert Arrangement (LJT) 11-2 11-4 11-5 11-6 11-13 11-35 11-98 11-99
Service Rating IIIIMMII
Number of Contacts 2456131367
Contact Size 16 20 20 20 22M 22D 20 20
Insert Arrangement (JT) 12-3 12-4 12-8 12-22 12-35 12-98 14-4 14-5
Insert Arrangement (LJT) 13-3 13-4 13-8 13-22 13-35 13-98 15-4 15-5
Service Rating IIIIMMIIII
Number of Contacts 3 4 8 22 22 10 4 5
Contact Size 16 16 20 22M 22D 20 12 16
Insert Arrangement (JT) 14-15 14-18 14-19 14-35 14-37 14-68 14-97
Insert Arrangement (LJT) 15-15 15-18 15-19 15-35 15-37 15-68 15-97
Service Rating IIIMMII
Number of Contacts 14 1 18 19 37 37 8 8 4
Contact Size 20 16 20 20 22D 22M 16 20 16
CONTACT LEGEND 8 10 12 16 20 22 22M 22D
JT/LJT
insert arrangements
8
black arrangements – JT or LJT
green arrangements – JT only
blue arrangements – LJT only
front face of pin inserts illustrated
Insert Arrangement (JT) 16-6 16-8 16-13 16-26
Insert Arrangement (LJT) 17-2 17-6 17-8 17-13 17-22 17-25 17-26
Service Rating M I II I Coax M I
Number of Contacts 38 1 6 8 13 2 2 22 2 26
Contact Size 22D 8 Twinax 12 16 16 12 Coax 8 Coax 22D 8 Coax 20
Insert Arrangement (JT) 16-35 16-42 16-55 16-99 18-11
Insert Arrangement (LJT) 17-35 17-42 17-55 17-99 19-11 19-18
Service Rating MMM I II M
Number of Contacts 55 42 55 21 2 11 14 4
Contact Size 22D 22 22M 20 16 16 22D 8 Twinax
Insert Arrangement (JT) 18-28 18-30 18-32 18-35 18-53 18-66
Insert Arrangement (LJT) 19-28 19-30 19-32 19-35 19-53 19-66
Service Rating IIIMMM
Number of Contacts 26 2 29 1 32 66 53 66
Contact Size 20 16 20 16 20 22D 22 22M
Insert Arrangement (JT) 18-68 18-96 20-1 20-2
Insert Arrangement (LJT) 19-67 19-68 21-1 21-2
Service Rating M I I M M
Number of Contacts 67 18 9 79 65
Contact Size 22M 16 12 22M 22
CONTACT LEGEND 8 10 12 16 20 22 22M 22D
JT/LJT
insert arrangements
9
black arrangements – JT or LJT
green arrangements – JT only
blue arrangements – LJT only
front face of pin inserts illustrated
Insert Arrangement (JT) 20-11 20-16
Insert Arrangement (LJT) 21-11 21-16 21-24 21-25 21-27
Service Rating IIIIII
Number of Contacts1116242527
Contact Size 12 16 20 20 20
Insert Arrangement (JT) 20-35 20-39 20-41
Insert Arrangement (LJT) 21-35 21-39 21-41 21-75 21-79
Service Rating M I I N II
Number of Contacts 79 37 2 41 4 17
Contact Size 22D 20 16 20 (See Note) 22D
Insert Arrangement 22-1 22-2 22-14
Insert Arrangement (LJT) 23-1 23-2 23-5 23-6 23-14
Service Rating MMM M I
Number of Contacts 100 85 5 6 14
Contact Size 22M 22 8 Twinax 8 Twinax 12
Note: MS connector 21-75 is supplied with four size 8 twinax contacts.
Proprietary connector 21-75 is supplied with four size 8 coax contacts.
MS connector 21-79 has provision for two size 8 coax contacts.
Coax contacts are not supplied unless specified by customer. CONTACT LEGEND 8 10 12 16 20 22 22M 22D
JT/LJT
insert arrangements
(See Note)
10
black arrangements – JT or LJT
green arrangements – JT only
blue arrangements – LJT only
front face of pin inserts illustrated
Insert Arrangement (JT) 22-21 22-32 22-35
Insert Arrangement (LJT) 23-21 23-32 23-34 23-35
Service Rating II I I M
Number of Contacts 21 32 34 100
Contact Size 16 20 20 22D
Insert Arrangement (JT) 22-53 22-55
Insert Arrangement (LJT) 23-36 23-53 23-55 23-97
Service RatingIIIII
Number of Contacts36535516
Contact Size 20 20 20 16
Insert Arrangement (JT) 24-1 24-2 24-4
Insert Arrangement (LJT) 23-99 25-1 25-2 25-4
Service Rating II M M I
Number of Contacts 11 128 100 48 8
Contact Size 16 22M 22 20 16
CONTACT LEGEND 8 10 12 16 20 22 22M 22D
JT/LJT
insert arrangements
11
black arrangements – JT or LJT
green arrangements – JT only
blue arrangements – LJT only
front face of pin inserts illustrated
Insert Arrangement (JT) 24-19
Insert Arrangement (LJT) 25-7 25-11 25-19 25-20
Service Rating M N I N
Number of Contacts 97 2 2 9 19 10 13 3 4
Contact Size 22D 8 Twinax 20 10 12 20 16 8 Twinax 12 Coax
Insert Arrangement (JT) 24-24 24-29 24-35 24-37
Insert Arrangement (LJT) 25-24 25-29 25-35 25-37
Service Rating I I M I
Number of Contacts 12 12 29 128 37
Contact Size 16 12 16 22D 16
Insert Arrangement (JT) 24-43 24-61
Insert Arrangement (LJT) 25-43 25-46 25-61
Service RatingIII
Number of Contacts 23 20 40 4 2 61
Contact Size 20 16 20 16 8 Coax† 20
† Coax contacts for RG180 or RG195 cable.
CONTACT LEGEND 8 10 12 16 20 22 22M 22D
JT/LJT
insert arrangements
(Locations U and Y - Dedicated
to Fiber Optics)
28
!" #
For MS stamping identification, accessories must be ordered by MS part number.
If ordered by 10-part number, they will be stamped with said number.
*To complete order number, add shell size and suffix number.
For example: Shell size 10 with cadmium plate, nickel base would be10-405982-107
or M85049/49-2-10W
Finish
10-Number
Suffix
MS27506
Suffix
M85049/49
Suffix
Chromate treat -XX0 NA
Anodic coating -XX5 CXX-2 (-2-XXA)
Cadmium plate nickel base -XX7 AXX-2 NA
Olive drab, cadmium, nickel base -XX9 BXX-2 (-2-XXW)
Electroless nickel -XXG FXX-2 (-2-XXN)
JT/LJT — accessories
strain relief (crimp type)
All dimensions for reference only.
Note: For solder type cable clamp 10-241055-XXX (M85049/49) consult Amphenol, Sidney, NY.
For other M85049 accessories available from Amphenol Aerospace, see page 46.
Shell
Size
B
Dia
+.010
–.025
G
Max.
L
Max
Y
Thread (Modified) BB
Dia.
+.000
–.011
Screw
Size
Size
Class 2B
Modified
Minor Dia.
8 .125 .775 .984 .4375-28UNEF .399 - .405 .250 6-32UNC
10 .188 .837 .984 .5625-24UNEF .524 - .529 .312 6-32UNC
12 .312 .963 .984 .6875-24UNEF .649 - .654 .438 6-32UNC
14 .375 1.087 1.234 .8125-20UNEF .766 - .771 .562 6-32UNC
16 .500 1.150 1.234 .9375-20UNEF .891 - .896 .625 6-32UNC
18 .625 1.400 1.234 1.0625-18UNEF 1.002 - 1.007 .750 8-32UNC
20 .625 1.400 1.234 1.1875-18UNEF 1.135 - 1.140 .750 8-32UNC
22 .750 1.587 1.359 1.3125-18UNEF 1.252 - 1.257 .938 8-32UNC
24 .800 1.681 1.281 1.4375-18UNEF 1.377 - 1.382 1.000 8-32UNC
38
All dimensions for reference only.
Shell
Size
B
Dia.
Ref.
D
Dia.
Max.
M
±.250
N
Dia.
+.001
–.005
9 .180 .812 3.000 .572
11 .180 .938 3.000 .700
13 .180 1.062 3.500 .850
15 .180 1.188 3.500 .975
17 .180 1.312 3.500 1.100
19 .209 1.438 3.500 1.207
21 .209 1.562 4.000 1.332
23 .209 1.688 4.000 1.457
25 .209 1.812 4.000 1.582
Finish
10-
Number
Suffix
MS
Number
Suffix
with chain
MS
Number
Suffix
without chain
Chromate treat -XX0
Anodic coating -XX5
Cadmium plate nickel base -XX7 AXXC AXX
Olive drab, cadmium, nickel base -XX9 BXXC BXX
Electroless nickel -XXG FXXC FXX
LJT —accessories
plug protection cap
* To complete order number, add shell size and suffix number.
For example, shell size 11 with cadmium plate, nickel base would be 10-421399-117, MS27501A11C or MS20048A11.
45
Partial listing. If you do not see the contact for your application, consult Amphenol, Sidney, NY.
THERMOCOUPLE CONTACTS
Contact
Size Material
JT/LJT
Pins
JT
Sockets
LJT
Sockets
20
Chromel 10-407862-310 10-407863-310 10-407236-310
Alumel 10-407862-320 10-407863-320 10-407865-320
Iron 10-407862-335 10-407863-335 10-407865-335
Constantan 10-407862-342 10-407863-342 10-407865-342
JT/LJT — thermocouple contacts,
plastic protection caps, sealing plugs
PLASTIC PROTECTION CAPS
JT LJT Plug Receptacle
8 10-70500-10 10-70506-10S
9 10-70506-14 10-70500-10
10 10-70506-14 10-70506-12
11 10-70506-16 10-70500-12
12 10-70506-16 10-70506-14
13 10-70506-18 10-70500-14
14 10-70506-18 10-70506-16
15 10-70506-20 10-70500-16
16 10-70506-20 10-70506-18
17 10-70506-22 10-70500-18
18 10-70506-22 10-70506-20
19 10-70506-24 10-70500-20
20 10-70506-24 10-70506-22
21 10-70576-24 10-70500-22
22 10-70576-24 10-70506-24
23 10-70506-28 10-70500-24
24 10-70506-28 10-70576-24
25 10-558651-25 10-70506-28
SEALING PLUGS
Contact
Size
Sealing Plugs
Proprietary No. MS No.
8 (Coax) 10-482099-8 MS27488-8
8 (Twinax) T3-4008-59P N/A
10 (Power) 10-576225 N/A
12 10-405996-12 MS27488-12
16 10-405996-16 MS27488-16
20 10-405996-20 MS27488-20
22 10-405996-22 MS27488-22
22M 10-405996-22 MS27488-22
22D 10-405996-22 MS27488-22
46
MIL-C-85049 Accessories
JT/LJT — accessories
M85049 strain reliefs, adapters, backshells,
“ABK” heat shrinkable backshells
“ABK” Heat Shrinkable Backshells
MIL-C-85049 Accessories
Now available through Amphenol are:
• Strain Reliefs (self-locking, nonself-locking, clamps & tie
mounts)
• Shrink boat adapters (environmental and non-environmental)
• Backshells (environmental and non-environmental)
Part numbers covered are: M85049/14, /15, /16, /17, /18, /19, /20,
/21, /27, /33, /36, /37, /38, /39, /47, /49-2, /57, /62, /63, /69.
Consult Amphenol Aerospace, Sidney, NY for further information.
“ABK” Heat Shrinkable Backshells – One Part Cable
Termination for MIL-C-38999 Series I, II, III & IV
Benefits of “ABK” assemblies are:
• One piece part
• Quick and easy installation
• One part covers wide cable range
• Lightweight
• Stainless and aluminum adapters
• F, W and C Class finishes
• Shielded and Unshielded
• Straight, 45° and 90° configurations
• Various material, i.e. LFH, fluid resistant
• Operating temp. range – 55°C to +150°C
• Repairable
Amphenol “ABK” Heat Shrinkable backshell kits are one-part
assemblies for terminating MIL-C-38999 Series I, II, III & IV con-
nectors to either shielded or unshielded cables. Constructed using
Spin Coupling adapters and heat-shrinkable molded parts, the kit
comprises components already well proven in harsh military envi-
ronments.
Installation is simply effected by coupling the adapter to the con-
nector and shrinking the rear of the molded part onto the cable
with a hot air gun. The molded part has a hot melt adhesive pre-
installed to provide a bond between the cable jacket and the
molded part. When used in conjunction with shielded cables, the
assembly provides electrical continuity between the cable shield
and the connector with RayatenTM molded parts which provide
screening levels better than 90 DB at 100 MHz.
For more information on “ABK” backshells, including how to order
and cable ranges, consult Amphenol Aerospace, Sidney, NY.
47
The following data includes information pertaining to the application
tools which have been established for crimping, inserting, and
removing the size 12, 16, 20, 22, 22D and 22M contacts incorpo-
rated in the JT-R, LJT-R and MIL-C-38999 (MS) series connectors
as applicable.
All crimping tools included are the “full cycling” type and when used
as specified in the installation instructions (L-624 and L-844 cover-
ing the JT-R, LJT-R and MS series connectors will provide reliable
crimped wire to contact terminations. There is a possibility of addi-
tional crimping tools other than those included being available at
present or in the future for this specific application.
For additional information on coaxial contacts, consult Amphenol®
catalog section 12-130.
JT/LJT
application tools
Contact
Size/Type
Crimping
To o l
Turret Die
or Positioner
12 Pin and Socket M22520/1-01 M22520/1-04
16 Pin and Socket M22520/1-01
M22520/7-01
M22520/1-04
M22520/7-04
20 Pin and Socket
M22520/1-01
M22520/2-01
M22520/7-01
M22520/1-04
M22520/2-10
M22520/7-08
22, 22D, 22M Pin M22520/2-01
M22520/7-01
M22520/2-09
M22520/7-07
22, 22D, 22M Socket (LJT-R) M22520/2-01
M22520/7-01
M22520/2-07
M22520/7-05
22D Socket (JT-R) M22520/2-01
M22520/7-01
M22520/2-06
M22520/7-06
8 Twinax Center Pin and Socket M22520/2-01 M22520/2-37
8 Twinax Intermediate
Outer Pin & Socket M22520/5-01 M22520/5-200
Where 2 or 3 tools are listed for a contact size, only one tool and its die or positioner are required to crimp the contact. The above
crimping tools and positioners are available from the approved tool manufacturer.
Contact
Size/Type
Crimping
To o l
Turr e t D ie
or Positioner
8 Coaxial Inner Pin and Socket M22520/2-01 M22520/2-31
8 Coaxial Outer Pin
and Socket
M22520/5-01 M22520/5-05
Die Closure B
M22520/5-01 M22520/5-41
Die Closure B
M22520/10-01 M22520/10-07
Die Closure B
16 Coaxial Inner
Pin and Socket M22520/2-01 M22520/2-35
16 Coaxial Outer
Pin and Socket M22520/4-01 M22520/4-02
12 Coaxial Inner Pin and Socket M22520/2-01 M22520/2-34
12 Coaxial Outer Pin and Socket M22520/31-01 M22520/31-02
10 (Power) †† ††
INSERTION TOOLS
Use with
Contact Size
Plastic Tools Metal Tools
Part Number
Color
Code
Angle Type
Straight Type
Proprietary
Part Number
Color
Code
MS
Part Number
Proprietary
Part Number
10 (Power) M81969/14-05* Gray/White M81969/8-11 † † Green
12 M81969/14-04* Yellow/(White) M81969/8-09 11-8674-12 11-8794-12 Yellow
16 M81969/14-03* Blue/(White) M81969/8-07 11-8674-16 11-8794-16 Blue
20 M81969/14-10* Red/(Orange) M81969/8-05 11-8674-20 11-8794-20 Red
22 M81969/14-09 Brown/(White) M81969/8-03 11-8674-22 11-8794-22 Brown
22D, 22M M81969/14-01* Green/(White) M81969/8-01 11-8674-24 11-8794-24 Black
8 Coaxial None Required
8 Twinax None M81969/46-06** None Red
REMOVAL TOOLS
Use with
Contact Size
Plastic Tools Metal Tools
Part Number
Color
Code
For Unwired Contacts
Proprietary
Part Number
Angle Type
Straight Type
Proprietary
Part Number
Color
Code
MS
Part Number
Proprietary
Part Number
10 (Power) M81969/14-05* (Green)/White † M81969/8-12 † † Green/White
12 M81969/14-04* (Yellow)/White 11-10050-11 M81969/8-10 11-8675-12 11-8795-12 Yellow/White
16 M81969/14-03* (Blue)/White 11-10050-10 M81969/8-08 11-8675-16 11-8795-16 Blue/White
20 M81969/14-10* (Red)/Orange 11-10050-9 M81969/8-06 11-8675-20 11-8795-20 Red/White
22 M81969/14-09* (Brown)/White 11-10050-8 M81969/8-04 11-8675-22 11-8795-22 Brown/White
22D, 22M M81969/14-01* (Green)/White 11-10050-7 M81969/8-02 11-8675-24 11-8795-24 Black/White
8 Coaxial M81969/14-12 Green None None 11-9170 DRK264-8†† N/A
8 Twinax M81969/14-12 Green None M81969/46-12** 11-9170 N/A N/A
CRIMPING TOOLS
The M81969/8, 11-8674, 11-8675, and 11-8794 metal contact insertion and removal
tools will accommodate wires having the maximum outside diameter as follows:
Contact size 12– .155, 16– .109, 20– .077, 22, 22D, 22M– .050. When wire diame-
ters exceed those specified, the plastic tools must be used.
* Double ended insertion/removal tool.
** Twinax insertion and removal tools are available only in a straight
type, metal version.
† To be determined
†† Contact Daniels Manufacturing Co. for availability.
49
PROPRIETARY PART NUMBER
To more easily illustrate ordering procedure, part number JT00RE-22-2PA( ) is shown
as follows:
PART NUMBER
JT 00 RE - 22 - 2 P A ( )
12 345 678/9
See code below:
1. Connector Type:
JT designates standard Junior Tri-Lock connector
LJT designates long Junior Tri-Lock connector
LJTS JTS designates high temperature connector
LJTN JTN designates chemical and fuel resistant
JTL designates miniature mounting dimensions
JTLN designates miniature mounting dimensions -
chemical resistant
JTLS designates miniature mounting dimensions -
high temperature
LJTPQ JTPQ designates back panel mounted wall mounting receptacle
LJTP JTP designates back panel mounted box mounting receptacle
LJTPN JTPN designates back panel mounted - chemical resistant
LJTPS JTPS designates back panel mounted - high temperature
JTG designates plug with grounding fingers*
JTNG designates plug with grounding fingers* -
chemical resistant
2. Shell Style:
00 designates wall mount receptacle
01 designates line mount receptacle
02 designates box mount receptacle
06 designates straight plug
07 designates jam nut receptacle
08 designates 90 degree plug
I designates solder mount receptacle - hermetic
3. Service Class: Solder contacts/connectors:
“P” for potting applications - These connectors are supplied with a potting
boot.†All shells are designed with integral features to retain potting boots.
“A” for general duty applications.
“A (SR)” - threaded rear design with strain relief.†
“C” for pressurized applications.
“C” (SR)” - threaded rear design with strain relief.†
“H” for hermetic applications - Fused compression glass sealed inserts. Leakage
rate less than .01 micron cu. ft./hr. (1 x 10-7 cc/sec.) at 15 psi differential.
“Y” same as “H” with interfacial seal.
“T” for MS27599A applications - general duty, pressurized (receptacles only)
3. Service Class: Crimp contacts/connectors:
“RP” for potting crimp applications. Supplied with spacer grom-
met and potting boot.†
“RE” for environmental crimp applications. Supplied with a
grommet and compression nut.† Can be supplied with
strain relief integral with compression nut “RE (SR)”. (JT
Series only).
“RGF”** electroless nickel plated ground plane aluminum, 200°C
“RGW”**olive drab cadmium plated ground plane aluminum,
175°C
“RT” for environmental applications. Supplied without rear
accessories. Design provides serrations on rear threads
of shells.
For additional information defining description of service class,
consult Amphenol, Sidney, NY.
4. Shell Size:
JT shell sizes available from 8 through 24.
LJT shell sizes available from 9 through 25.
5. Insert Arrangement:
22-2 designates insert arrangement. Refer to pages 4-9 for insert
availability.
6. Contact Style:
P designates pin contacts; S designates socket contacts.
7. Alternate Keying:
“A” designates alternate keying connector assembly. Other basic
alternate keys are “B”, “C” and “D”. No letter required for normal
(no rotation) position. See pages 4 and 5.
8. Strain Relief Option:
“SR” designates a strain relief clamp. Strain reliefs are available
only on “A”, “C” and “RE” class connectors.
9. Finish Variation Suffix:
See finish variations available in table below:
Finish
Military
Finish
Data
Finish
Suffix
Finish plus
“SR” Suffix
Cadmium plated nickel base A (SR)
Olive drab cadmium plate nickel base B (014) (386)
Electroless nickel F (023) (424)
Electroless nickel, space compatible (453) (467)
Anodic coating (Alumilite) C (005) (300)
Chromate treated (Iridite 14-2) (011) (344)
MILITARY TYPES
MS27473 E 14 A 18 P A
MS Number
Service Class
Shell Size
Finish
Insert Arrangement
Contact Style (P or S)
Alternate Keying (No letter required for normal position)
Military Service Class
E environmental, same as RE
T environmental, same as RT
P potting, same as RP
Y hermetically sealed, same as Y
For finish variations see above chart. For additional data, see page 3.
For MS depictions and dimensional data see applicable Mil-Spec.
(MIL-DTL-38999, MIL-C-27599).
JT/LJT
how to order
* Grounding fingers standard on all LJT plugs
†Not applicable to box mounting style or LJT Series I.
** For more information on Coax/Triax/Twinax Ground
Plane Connectors, see page 51.
Amphenol Vendor Identification/FSCM 77820
