DETAIL SPECIFICATION SHEET
CONNECTORS, ELECTRICAL CIRCULAR, COVER, PROTECTIVE, RECEPTACLE,
MIL-DTL-26482 SERIES 1 AND 2, BAYONET COUPLING
This specification is approved for use by all Depart m ents
and Agencies of the Department of Defense.
The requirements for acquiring the product described herein
shall consist of this specification sheet and MIL-DTL-26482.
FIGURE 1. Protective cover, receptacle, all classes.
AMSC N/A FSC 5935
Reactivated after 25 July 2012 and may be used for
new and existing designs and acquisitions.
INCH-POUND
MS3181G
w/AMENDMENT 1
30 August 2013
SUPERSEDING
MS3181G
25 July 2012
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MS3181G
w/AMENDMENT 1
2
COVER WITH CHAIN AND RING (STYLE N) ANGLED RING
FIGURE 1. Protective cover, receptacle, all classes – Continued.
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MS3181G
w/AMENDMENT 1
3
Shell
size
A
inside
dia
(ID)
+.005
-.001
(+0.13
- 0.03)
B
max
bay lock loc.
C
bay groove
width
+.016 /
-.001
(+0.41 /
-0.03)
dia
(ID)
slots
-.006
- 0.15)
8
.481
(12.22)
.149 (3.78)
.090
(2.29)
10
.602
(15.29)
12
.761
(19.33)
14
.885
(22.48)
16
1.010
(25.65)
18
1.136
(28.85)
20
1.260
(32.00)
.089/.153
(2.26 / 3.89)
22
1.385
(35.18)
24
1.510
(38.35)
.087 (2.21)
.137
(3.48)
FIGURE 1. Protective cover, receptacle, all classes – Continued.
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MS3181G
w/AMENDMENT 1
4
Shell
size
H
+.500
-.250
(+12.70
- 6.35)
std chain
/ rope
length
J
+.010
-.015
(+0.25
- 0.38)
disk
(gasket)
loc.
L
max
length
Q
dia
max
overall
X
max
length
overall
K
outside
dia
(OD)
max
ring
E
min
ring
throat
N
inside
dia
(ID)
min
ring
8 3.000
(76.20)
.115
(2.92)
.562
(14.27)
.734
(18.64)
.844
(21.44)
.812
(22.62)
.234
(5.94)
.578
(14.68)
10
.859
(21.82)
1.000
(25.40)
.703
(17.86)
12
3.500
(88.90)
1.000
(25.40)
1.188
(30.18)
.891
(22.63)
14
1.125
(28.58
1.438
(36.53)
1.016
(25.81)
16
1.250
(31.75)
1.562
(39.67)
1.141
(28.98)
18
1.375
(34.92)
1.688
(42.88)
1.266
(32.16)
20
4.000
(101.60)
1.500
(38.10)
1.872
(47.55)
1.391
(35.33)
22
1.625
(41.28)
1.938
(49.23)
1.516
(38.51)
24
.147
(3.73)
.602
(15.29)
1.750
(44.45)
.875
(22.22)
2.062
(52.37)
1.641
(41.68)
NOTES:
1. Dimensions are in inches.
2. Metric equivalents (in parent heses) are given for information only.
3 True position (TP) tolerances specified are in accordance with A S M E Y14.5.
4. Intermateability dimensions shall be in accordance with MIL-DTL-26482.
FIGURE 1. Protective cover, receptacle, all classes – Continued.
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MS3181G
w/AMENDMENT 1
5
REQUIREMENTS:
Dimensions and configuration: See fi gure 1.
The chain or rope shall rotate freely on the fastener.
Materials:
a. Cover - aluminum alloy.
b. Cover, bayonet pins - stainless steel, passivated.
c. Chain - stainless steel, passivated in accordance with RR-C-271, type II,
class 3.
d. Disk (gasket) - silicone elastomer.
e. Fasteners - stainless steel, passivated.
f. Ring - stainless steel, passivated, .030 i nches (0.76 m m ) m aximum
thickness.
g. Rope - 7 strand stainless steel, passivated.
Finish Designators (class E is superseded by class L):
A – series 2, hard anodic, non-conductive in accordance with MIL-A-8625, type III, .0008 i nch
(0.020 mm) minimum thickness.
L - series 2, electroless nickel, conductive, in accordance with MIL-DTL-26482.
D - series 1 and 2, pure electrodeposited aluminum, conducti ve, in accordance with
MIL-DTL-26482.
T - series 1 and 2, nickel fluorocarbon polymer, conductive, in accordance with
MIL-DTL-26482.
W - series 1 and 2, cadmium, conductive (500 hr dynamic salt spray in accordance with
MIL-DTL-26482.
K - series 1 and 2, zinc-nickel, conductive, in accordance with MIL-DTL-26482.
QUALIFICATION: Qualification and requalification requirements shall be in accordance with
MIL-DTL-26482, series 1 and 2 connectors.
Connector mating: This protective cov er mates with all MIL-DTL-26482, series 1 and 2 connector
receptacles.
Intermateability di m ensions shall be in accordance with MIL-DTL-26482.
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MS3181G
w/AMENDMENT 1
6
Part or Identifyi ng Num ber (P IN) example:
MS3181 - 12 C A L
MS number
Shell size
Attachment option
C – with chain
N – with chain and ring
R – with rope
Finish
Length (omit for standard)
L - Chain or rope with a length of 5. 000 +. 500/-.250 inches (127 +12.7/-6.35 mm) in lieu of
standard (STD) length. For standard length, leave blank (the standard length is the defaul t
length).
Change effectivity . Unless otherwise specified by the qualify i ng activ i ty, all changes from the previ ous
revision of this specification sheet shall become effective within 90 days of the date of publication of the
latest revision. If unable to implement changes within the 90 day time period, the manuf act urer or value
added distributor shall notify the qualifying activity. The qualifyi ng act i vity shall determine if an extension
may be granted.
Disposition of stock. Unless otherwise specified by t he quali fying activity and coordinated with the
preparing activity, qual if ied m anufacturers and their selling agents or distributors many cont inue to ship
protective covers that include f l at rings for style N (in lieu of angl ed rings) in accordance with the previous
revision of the specification f or a period of 6 months from the date of the latest revision. DLA st orage
stocks may continue to issue product manufactured in accordance with t he prev i oi us rev ision until DLA
storage stocks are depleted of protective cov ers t hat include flat rings.
Amendment Notations. T he m argi ns of this specification are marked with vertical l i nes t o indi cat e
modifications generated by t hi s amendm ent. This was done as a convenience only and the Gov ernm ent
assumes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are
cautioned to evaluate the requirements of this document based on the entire cont ent irrespective of the
marginal notations.
Referenced documents. In addition to MIL-DTL-26482, this document references the following:
MIL-A-8625
RR-C-271
ASME Y14.5
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MS3181G
w/AMENDMENT 1
7
CONCLUDING MATERIAL
Custodians: Preparing activity:
Army – CR DLA – CC
Navy – AS
Air Force – 85 (Project 5935-2013-163)
DLA – CC
Review activities:
Army – AV, CR4
Navy – EC, SH
Air Force – 99
NOTE: The activit i es li st ed above were interested in this document as of the date of this document.
Since organizations and responsibilities can change, you should verify the currency of the inf ormation
above using the ASSIS T O nl ine database at https://assist.dla.mil.
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