SPACE-GRADE MIL-DTL-24308 D-SUB BACKSHELLS
Lightweight, Low-Profile EMI/RFI Backshell
with Micro Banding Porch and Qwik-Ty Option
Solid shell, top elliptical cable entry · 557-281
How To Order
Sample Part Number
557-281
M
5
04
B
S
C
Series
557ꢀ281 Top Oval Entry backshell
M = Electroless Nickel
Z2 = Gold Plate
Finish Symbol
Shell Size
1, 2, 3, 4, 5, 6 (Table I)
Entry Size
04, 05, 06, 07, 08, 09, 10, 11, 12, 13, 14, 15, 16 (Table III)
A, B, C, D, E, F, G, H (Table IV)
Height Code
QwikꢀTy Option
S = With Qwik-Ty strain relief arm Omit for none
C = Fillister Head W = Socket Head Jackscrew
P = Fixed Female Jackscrew Omit for none
Hardware Option
STRAIN RELIEF ARM
SEE P/N DEVELOPMENT
.270
.32 (8.13)
4-40 UNC-2A
J
"P" OPTION
Fixed Female
Jackscrew
"C" OPTION
Socket Head
Jackscrew
.035
(.89)
.270
CONNECTOR SHOWN
Table III: Cable Entry
FOR REFERENCE ONLY
A
Entry Size
H
.016 WASHER
.4
.0
.6
.7
.8
.9
1.
11
12
13
14
10
16
.500 (12.70)
.625 (15.88)
.750 (19.05)
.875 (22.23)
1.000 (25.40)
1.125 (28.58)
1.250 (31.75)
1.375 (34.92)
1.500 (38.10)
1.625 (41.28)
1.750 (44.45)
1.875 (47.63)
2.000 (50.80)
C
F
THICKNESS
REF
4-40 UNC-2A
.125/.115
"W" OPTION
Socket Head
Jackscrew
(3.18/2.92)
2 PLACES
E
D
B
10°
H
G
TYP
Table I: Shell Size
Shell
Size
C ± ±..0
(.±13)
G ± ±.3.
(±762)
Max Entry
Size
A
B
D
E
F Ref±
1
2
3
4
0
6
1.203 (30.56) .500 (12.70) .984 (24.99) .375 (9.52) .467 (11.86) .639 (16.23) .839 (21.31)
1.531 (38.88) .500 (12.70) 1.312 (33.32) .375 (9.52) .467 (11.86) .978 (24.84) 1.178 (29.92)
2.078 (52.78) .500 (12.70) 1.852 (47.04) .375 (9.52) .467 (11.86) 1.507 (38.28) 1.706 (43.33)
2.718 (69.04) .500 (12.70) 2.500 (63.50) .375 (9.52) .467 (11.86) 2.163 (54.94) 2.364 (60.05)
2.625 (66.68) .609 (15.47) 2.406 (61.11) .484 (12.29) .579 (14.71) 2.053 (52.15) 2.291 (58.19)
2.780 (70.61) .670 (17.02) 2.500 (63.50) .554 (14.07) .621 (15.77) 2.185 (55.50) 2.421 (61.49)
05
08
12
Table IV: Height Code
16
16
16
Height Code
J
A
B
C
D
E
.50 (12.70)
.62 (15.75)
.75 (19.05)
.87 (22.10)
1.00 (25.40)
1.12 (28.45)
1.25 (31.75)
1.38 (35.05)
F
MATERIALS
Backshell: Aluminum alloy
Hardware: CRES / passivated
G
H
32
© 2019 Glenair, Inc • 1211 Air Way, Glendale, CA 91201 • 818-247-6000 • www.glenair.com • U.S. CAGE code 06324 • Aerospace/Space Flight Accessories
Dimensions in Inches (millimeters) are subject to change without notice.