DETAIL SPECIFICATION SHEET
CONNECTORS, RECEPTACLE, ELECTRICAL, SERIES II,
SINGLE HOLE MOUNT, BAYONET COUPLING,
SOLDER PIN CONTACT, CLASS H
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.
NOTE: For “XX”, see note 5 and table I for contact caviti es requiring reduced dim ensions.
FIGURE 1. Receptacle, class H, dimensions and configurations.
AMSC N/A FSC 5935
Inactive for new design aft er 15 December 1998.
INCH-POUND
MS3449E
14 January 2011
SUPERSEDING
MS3449D
1 March 2007
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FIGURE 1. Receptacle, class H, dimensions and configurations - Continued.
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FIGURE 1. Receptacle, class H, dimensions and configurations - Continued.
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FIGURE 1. Receptacle, class H, dimensions and configurations - Continued.
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Contact size BB CC DD HH KK
20
.041 (1.04)
.039 (0.99)
.088 (2.24)
.061 (1.55)
.048 (1.22)
.042 (1.07)
.188 (4.78)
.109 (2.77)
.110 (2.79)
.068 (1.73)
16
.0635 (1.61)
.0615 (1.56)
.116 (2.95)
.096 (2.44)
.075 (1.91)
.069 (1.75)
.251 (6.38)
.172 (4.37)
.141 (3.58)
.109 (2.77)
12
.095 (2.41)
.093 (2.36)
.150 (3.81)
.130 (3.30)
.122 (3.10)
.112 (2.84)
.251 (6.38)
.172 (4.37)
.141 (3.58)
.109 (2.77)
Shell
size
A
B
D
dia
(min ID)
E
F
8
.954 (24.23)
.923 (23.44)
1.078 (27.38)
1.047 (26.59)
.361 (9.17) .536 (13.61)
.707 (17.96)
.691 (17.55)
10
1.078 (27.38)
1.047 (26.59)
1.203 (30.56)
1.172 (29.77)
.489 (12.42)
.661 (16.79)
12
1.266 (32.16)
1.235 (31.37)
1.391 (35.33)
1.360 (34.54)
.606 (15.39) .824 (20.93)
14
1.391 (35.33)
1.360 (34.54)
1.516 (38.51)
1.485 (37.72)
.731 (18.57) .948 (24.08)
16 1.516 (38.51)
1.485 (37.72)
1.641 (41.68)
1.610 (40.89)
.856 (21.74) 1.072 (27.23)
18
1.641 (41.68)
1.610 (40.89)
1.766 (44.86)
1.735 (44.07)
.961 (24.41) 1.197 (30.40)
20
1.828 (46.43)
1.797 (45.64)
1.954 (49.63)
1.923 (48.84)
1.086 (27.58) 1.322 (33.58) .772 (19.61)
.754 (19.15)
22
1.954 (49.63)
1.923 (48.84)
2.078 (52.78)
2.047 (51.99)
1.211 (30.76) 1.447 (36.75)
24
2.078 (52.78)
2.047 (51.99)
2.203 (55.96)
2.172 (55.17)
1.336 (33.93) 1.572 (39.93)
.803 (20.40)
.705 (17.91)
FIGURE 1. Receptacle, class H, dimensions and configurations - Continued.
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Shell
size
G
J
K
L
N
UNEF-2A
P
8
.113 (2.87)
.097 (2.46) .378 (9.60)
.358 (9.09)
.572 (14.53)
.820 (20.83)
.5625-24
.134 (3.40)
.074 (1.88)
10 .697 (17.70) .6875-24
12 .895 (22.73) .875-20
14 1.010 (25.65)
1.000-20
16 1.135 (28.83)
1.125-18
18 1.260 (32.00)
1.250-18
20
.148 (3.76)
.128 (3.25)
1.385 (35.18)
.920 (23.37) 1.375-18 .099 (2.51)
.039 (0.99)
22 1.510 (38.35)
1.500-18
24 .405 (10.29)
.385 (9.78) 1.635 (41.53)
.951 (24.16) 1.625-18 .069 (1.75)
.009 (0.23)
Shell
size
R
S
V X
Max weight
lbs (grams)
8 .609 (15.47)
.187 (4.75)
.062 (1.57) .204 (5.18)
.144 (3.66)
.525 (13.34) .0430 (19.50)
10 .734 (18.64) .650 (16.51) .0610 (27.67)
12 .921 (23.39) .813 (20.65) .0880 (39.92)
14 1.046 (26.57) .937 (23.80) .1100 (49.90)
16 1.171 (29.74) 1.061 (26.95) .1310 (59.42)
18 1.296 (32.92) 1.186 (30.12) .1720 (78.02)
20 1.484 (37.69) .250 (6.35)
.062 (1.57)
.169 (4.29)
.109 (2.77) 1.311 (33.30) .2110 (95.71)
22 1.609 (40.87) 1.436 (36.47) .2420 (109.77)
24 1.734 (44.04) .139 (3.53)
.079 (2.01) 1.561 (39.65) .2930 (132.90)
FIGURE 1. Receptacle, class H, dimensions and configurations - Continued.
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Inches mm
.005
0.13
.008
.010
.011
0.20
0.25
0.28
.016
0.41
.018
0.46
.019
.020
0.48
0.51
.022
0.56
.048
1.22
.054
.057
.060
1.37
1.45
1.52
.093
.098
.216
.278
2.36
2.49
5.49
7.06
NOTES:
1. Dimensions are in inches.
2. Metric equivalents are given for information only.
3. Unless otherwise specified, dimensional tolerances shall be .XX ± .01 i nches (0.25 m m ) and
.XXX ± .005 inches (0.13 mm). Angular tolerances shall be Xº ± 1°.
4. Polarizing stripes, color optional.
5. Insert arrangements requiring reduced diameters for raised seal barrier on outer row of contact
cavities as indicated (see table I).
6. True position (TP) tolerances specified are in accordance with ASME Y14.5.
FIGURE 1. Receptacle, class H, dimensions and configurations - Continued.
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TABLE I. Contact cavities requiring reduced diameters (XX)
for pins in outer row of contact cavit i es. 1/
Shell size Insert arrangement Contact cavities
8 -33 and -98 A, B, C
12 -10 C, G
14 -12 A, B, C, D, E, F, G, H
14 -18 A, C, E, G, J, L
14 -19 B, D, F, H, K, M
16 -26 A, B, C, D, E, F, G, H, J, K,
L, M, N, P, R
18 -32 A, B, C, D, E, F, G, H, J, K,
L, M, N, P, R, S, T
22 -41 A, B, C, D, E, F, G, H, J, K,
L, M, N, P, R, S, T, U, V,
W, X, Y
1/ The reduced diameter “XX” refers to the diameters of the raised seal barriers (pin barrier
rings) to ensure proper sealing of pin and socket after mati ng. See MIL-DTL-26482,
connector intermateability cont rol di m ensions (series 1 and series 2) figure for reduced
diameter “XX” for contact size 20 only.
REQUIREMENTS:
Dimensions and configuration: See figure 1 and table I.
Connector mating: This connector mates with M S3475 and MS3476, connector plugs.
For insert arrangement: See MIL-STD-1669.
Intermateability di m ensions are in accordance with MIL-DTL-26482.
Material:
Shell types A and B, 300 series stainless steel in accordance with ASTM A582/A582M and
ASTM A276.
Shell type C, cold rolled st eel i n accordance with A S T M A108.
Finish:
Shell types A and B, passivated in accordance with ASTM A967.
Shell type C, .0001 inch (2. 54 µ m ) tin minimum in accordance with A STM B545 or ASTM B339 ov er
nickel in accordance with SAE AMS-QQ-N-290. T he use of pure tin, as an underplate or final finish, is
prohibited both internally and externally. Tin content of connectors, their components and solder shall
not exceed 97 percent, by mass. T i n shall be all oyed with a minimum of 3 percent l ead, by mass.
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Part or Identifyi ng Num ber (P IN) example:
MS3449 H 24 C 61 P W
MS number
Class
Shell size
Termination type and shell m aterial
Insert arrangement
Contact style
Insert position
Changes from previous issue. The margins of this specificat i on are m arked wit h vertical lines to indicate
where changes from the previous issue were made. This was done as a convenience only and the
Government assumes no liability what soev er for any inaccuracies in these notations. Bi dders and
contractors are cautioned to evaluate t he requirem ents of this document based on the enti re cont ent
irrespective of the marginal not ations and relationship to the last prev i ous issue.
Referenced documents. In addition to MIL-DTL-26482, this document references the following:
MS3186
MS3475
MS3476
MIL-STD-1669
ASME Y14.5
ASTM A108
ASTM A276
ASTM A582/A582M
ASTM A967
ASTM B339
ASTM B545
SAE AMS-QQ-N-290
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CONCLUDING MATERIAL
Custodians: Preparing activity:
Army – CR DLA – CC
Navy – AS
Air Force – 85 (Project 5935–2011-005)
DLA – CC
Review activities:
Army – AR, AV, MI
Navy – EC, SH
Air Force – 99
NOTE: The activities listed above were interested in this document as of the date of this document.
Since organizations and responsibilities can change, you should veri fy the currency of the inf ormation
above using the ASSIS T O nl ine database at https://assist.daps.dla.mil.
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