MIL-DTL-28840/9
45° Environmental Backsheli Style B
CONNECTOR DESIGNATOR:
MIL-DTL-28840
G
Material and Finish
D = Corrosion Resistant Steel,
Cadmium Plate, Black
Basic
W = Aluminum, Cadmium Olive Drab
Part Number
M28840/9
16 W B
Style Designator
B = Environmental
Dash Number
(Table II)
D
TABLE II: Dash Number, Dimensions and Cable Range
Dash
No.
Shell
E
F Ref.
Dim
G Ref.
Dim
Cable Range
Size Ref.
Max
Min
Max
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
11
13
13
15
15
15
15
17
17
17
19
19
23
23
23
25
25
25
25
29
29
33
33
11
11
13
13
15
1.031 (26.2) 1.281 (32.5)
1.031 (26.2) 1.281 (32.5)
.938 (23.8)
.938 (23.8)
.188 (4.8)
.188 (4.8)
.281 (7.1)
.188 (4.8)
.281 (7.1)
.344 (8.7)
.438 (11.1)
.375 (9.5)
.438 (11.1)
.625 (15.9)
.375 (9.5)
.625 (15.9)
.438 (11.1)
.625 (15.9)
.312 (7.9)
.312 (7.9)
.438 (11.1)
.312 (7.9)
.438 (11.1)
.562 (14.3)
.750 (19.1)
.625 (15.9)
.750 (19.1)
.938 (23.8)
.625 (15.9)
.938 (23.8)
.750 (19.1)
.938 (23.8)
1.031 (26.2) 1.281 (32.5) 1.125 (28.6)
1.156 (29.4) 1.281 (32.5) .938 (23.8)
1.156 (29.4) 1.281 (32.5) 1.125 (28.6)
1.156 (29.4) 1.281 (32.5) 1.312 (33.3)
1.281 (32.5) 1.312 (33.3) 1.593 (40.5)
1.281 (32.5) 1.281 (32.5) 1.312 (33.3)
1.281 (32.5) 1.312 (33.3) 1.593 (40.5)
1.281 (32.5) 1.406 (35.7) 1.750 (44.5)
1.281 (32.5) 1.281 (32.5) 1.312 (33.3)
1.406 (35.7) 1.406 (35.7) 1.750 (44.5)
1.406 (35.7) 1.312 (33.3) 1.593 (40.5)
1.406 (35.7) 1.406 (35.7) 1.750 (44.5)
1.406 (35.7) 1.593 (40.5) 2.093 (53.2)
1.406 (35.7) 1.406 (35.7) 1.750 (44.5)
1.406 (35.7) 1.593 (40.5) 2.093 (53.2)
1.531 (38.9) 1.593 (40.5) 2.093 (53.2)
TABLE I: Shell Size
C Dia
Max
Shell
Size
A Thread
Class 2B
11
13
15
17
19
23
25
29
33
.750 - 20 UNEF 1.030 (26.2)
.875 - 20 UNEF 1.140 (29.0)
1.000 - 20 UNEF 1.260 (32.0)
1.125 - 18 UNEF 1.390 (35.3)
1.250 - 18 UNEF 1.510 (38.4)
1.438 - 18 UNEF 1.700 (43.2)
1.563 - 18 UNEF 1.820 (46.2)
.812 (20.6) 1.188 (30.2)
.625 (15.9) .938 (23.8)
.812 (20.6) 1.188 (30.2)
.875 (22.2) 1.250 (31.8)
1.875 - 16 UN
2.140 (54.4)
2.330 (59.2)
1.531 (38.9) 1.625 (41.3) 2.343 (59.5) 1.000 (25.4) 1.380 (35.1)
1.531 (38.9) 1.593 (40.5) 2.093 (53.2) .812 (20.6) 1.188 (30.2)
2.063 - 16 UNS
1.531 (38.9) 1.625 (41.3) 2.343 (59.5) 1.000 (25.4) 1.380 (35.1)
1.781 (45.2) 1.625 (41.3) 2.343 (59.5) 1.000 (25.4) 1.380 (35.1)
1.781 (45.2) 1.900 (48.3) 2.750 (69.9) 1.250 (31.8) 1.625 (41.3)
APPLICATION NOTES
1. For complete dimensions see the applicable Military
Specification.
1.031 (26.2) 1.281 (32.5) 1.125 (28.6)
1.156 (29.4) 1.281 (32.5) 1.312 (33.3)
1.156 (29.4) 1.281 (32.5) 1.312 (33.3)
1.281 (32.5) 1.281 (32.5) 1.312 (33.3)
1.281 (32.5) 1.281 (32.5) 1.312 (33.3)
.281 (7.1)
.344 (8.7)
.344 (8.7)
.375 (9.5)
.375 (9.5)
.438 (11.1)
.562 (14.3)
.562 (14.3)
.625 (15.9)
.625 (15.9)
2. Metric dimensions (mm) are in parentheses.
3. Cable Range is defined as the accommodation range
for the wire bundle or cable. Dimensions shown are not
intended for inspection criteria.
Dimensions in inches (millimeters) and are subject to change without notice.
U.S. CAGE Code 06324
© 2013 Glenair, Inc.
Printed in U.S.A.
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