Backshells and
Accessories
Product Series
Connector Designator
H = MIL-DTL-38999
Series III
Angular Function
S = Straight
M = 45° Elbow
N = 90° Elbow
Basic Number
Finish Symbol
(Table III)
Shell Size
(See Table I)
Dash No.
(See Table II)
Length in 1/2-Inch
Increments (See Note 3)
Anti-rotation
Device
A Thread
O-rings
B Dia
Knurl Style Mfr
Option
189-037
Environmental Backshell with Banding Strain Relief
for MIL-DTL-38999 Series III Fiber Optic Connectors
189 H S 037 M 17 07-3
2.0 (50.8)
1.0 (25.4)
Shrink Sleeving
Mil-I-23053/5 (See Note 5)
Shrink Sleeving
Mil-I-23053/4
(See Notes 5 & 6)
O-ring
Length
X
Cable Seal
K Dia
Cable Range
SYM S
STRAIGHT
Straight Knurl
E
1.50 (38.1)
W Wrench Flats
C
D
.75 (19.1) R Min.
F
SYM M
SYM N
45 º
90º
© 2006 Glenair, Inc.
CAGE Code 06324
Printed in U.S.A.
GLENAIR, INC.
•
1211 AIR WAY
•
GLENDALE, CA 91201-2497
•
818-247-6000
•
FAX 818-500-9912
E-Mail: sales@glenair.com
www.glenair.com
I-4
189-037
Environmental Backshell with Banding Strain Relief
for MIL-DTL-38999 Series III Fiber Optic Connectors
TABLE I: SHELL SIZE
Shell
Size
11
13
15
17
19
21
23
25
A Thread
ISO Metric
M15 x 1 - 6H
M18 x 1 - 6H
M22 x 1 - 6H
M25 x 1 - 6H
M28 x 1 - 6H
M31 x 1 - 6H
M34 x 1 - 6H
M37 x 1 - 6H
B
Max
1.060 (26.9)
1.170 (29.7)
1.290 (32.8)
1.420 (36.1)
1.540 (39.1)
1.670 (42.4)
2.010 (51.1)
2.120 (53.8)
C
Max
.861 (21.9)
.911 (23.1)
.965 (24.5)
1.014 (25.8)
1.064 (27.0)
1.118 (28.4)
1.172 (29.8)
1.221 (31.0)
D
Max
1.111 (28.2)
1.161 (29.5)
1.215 (30.9)
1.264 (32.1)
1.314 (33.4)
1.368 (34.7)
1.422 (36.1)
1.471 (37.4)
E
Max
1.563 (39.7)
1.938 (49.2)
1.938 (49.2)
2.063 (52.4)
2.063 (52.4)
2.563 (65.1)
2.313 (58.8)
2.250 (57.2)
F
Max
1.875 (47.6)
2.250 (57.2)
2.250 (57.2)
2.375 (60.3)
2.375 (60.3)
2.875 (73.0)
2.688 (68.3)
2.563 (65.1)
TABLE II: DASH NUMBER, CABLE RANGE & SHRINK SLEEVE
Dash
No.
05
07
09
11
Fiber Optic
Cable Range
.200 (5.1) / .285 (7.2)
.285 (7.2) / .390 (9.9)
.390 (9.9) / .550 (14.0)
.550 (14.0) / .670 (17.0)
K Dia
+.005 (0.1)
.312 (8.0)
.438 (11.1)
.562 (14.3)
.688 (17.5)
W
Hex
.750 (19.1)
.870 (22.1)
1.060 (26.9)
1.300 (33.0)
X
Dim
2.320 (58.9)
2.800 (71.1)
3.660 (93.0)
4.370 (111.0)
MIL-I-23053/4
Shrink Sleeve
/4-203-0
/4-204-0
/4-204-0
/4-205-0
MIL-I-23053/3
Shrink Sleeve
/5-107-0
/5-108-0
/5-109-0
/5-109-0
TABLE III: FINISH
SYM
NF
MATERIAL
Aluminum
FINISH
Cadmium/Olive Drab over
Electroless Nickel
(500 Hr. Salt Spray)
Cadmium Plate/Olive Drab
Gold Iridite over Cadmium
Plate over Nickel
Cadmium Plate/Olive Drab
over Nickel
Electroless Nickel
Cadmium Plate/Bright Dip
over Nickel
B
J
N
M
T
Aluminum
Aluminum
Aluminum
Aluminum
Aluminum
APPLICATION NOTES
1. Assembly to be identified with manufacturer’s name
and P/N as space permitted.
2. Glenair 600 series Backshell assembly tools are recommended
for assembly and installation.
3. Standard minimum length: 1.5 inches, for shorter length consult factory.
4. Material/ Finish:
Adapter, Coupling Nut- Al Alloy/ See Table III.
Strain relief components- Nylon 6/6 (Flame resistant/ zero halogen.
Anti- Rotation device- Torlon 4203L- Natural.
O-Rings- Fluorosilicone/ N.A.
5. MIL-I-23053/4 & /5 Shrink Sleeving to be packaged loose in
a plastic bag.
6. MIL-I-23054/4 Shrink Sleeving to be heat Shrink over
rear of adapter before MIL-I-23053/5 Shrink Sleeving.
7. Metric dimensions (mm) are indicated in parentheses.
© 2006 Glenair, Inc.
CAGE Code 06324
Printed in U.S.A.
GLENAIR, INC.
•
1211 AIR WAY
•
GLENDALE, CA 91201-2497
•
818-247-6000
•
FAX 818-500-9912
E-Mail: sales@glenair.com
www.glenair.com
I-5
Backshells and
Accessories
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