Backshells
Materials & Finishes, Assembly Torque Values,
Amphenol
Style-2 Configuration
38999
MATERIALS & FINISHES
MIL (QPL) QUALIFICATION
III
Amphenol offers adapters in the following standard finishes.
The base material is aluminum alloy.
Many Amphenol Backshells are qualified to SAE-AS
85049 standard. (Old standard is MIL-C-85049).
HD
Dualok
MATERIAL:
II
I
Aluminum parts: As per ASTM B 211, 221, 209, 85, 26
Steel parts:
Elastomers:
Other parts:
300 series, as per AMS-QQ-S-763/ASTM A 582
Fluro Silcon, Silicon
Suitable corrosion resistant material
SJT
Accessories
Aquacon
Herm/Seal
PCB
TABLE-2 (PLATING FINISHES)
Amphenol
MIL
Designation
Designation
Finish
Guiding Specifications/Requirements
A
B
L
A
Anodize, Black*
Anodize, Hard*
To meet AS85049 requirements
HIgH
SPEED
AMS-A-8625, Type-III, Class-1
AMS-QQ-290, Class-1, Grade-F
AMS-C-26074, Class-4, Grade-B
To meet AS85049 requirements
AMS-QQ-P-416, Type-I, Class-2
AMS-QQ-P-416, Type II, Class 3
Fiber
Nickel, Bright
Optics
M
N
T
Electroless Nickel
Electroless Nickel
Cadmium, Bright
Cadmium, Olive drab
Contacts
Connectors
Cables
N
U
AMS-QQ-P-416, Type-II, Class-3 (Cadmium);
AMS-C-26074, Class-4, grade-B (Nickel)
V
Cadmium, Olive drab over Electroless Nickel
W
Y
W
Cadmium, Olive drab over Electroless Nickel
Zinc-Cobalt, Dark Olive drab
Zinc-Cobalt, Black
To meet AS85049 requirements
ASTM-B840
Z
ASTM-B840
* Non conductive coatings.
For availability of other finishes, email your special
requirements: email: sales@backshellworld.com
ASSEMBLY TORQUE VALUES
Amphenol recommends the following torque values
for its adapters while assembling them to the
connectors. These values are based on the coupling
thread strength specified in SAE-AS85049 standard.
STYLE-2 CONFIGURATION
Applications requiring larger diameter cables than the standard
shell size; the backshell will be modified to Style-2 as shown in
the sketch below. The overall length of the Style-2 backshell will
increase by approximately 1 inch (25mm).
Connector
Shell Size
Torque
(Inch-Pounds)
8, 9
40
40
1.00 INCH (MAX.)
25.4 MM (MAX.)
3, 10, 10SL, 11
7, 12, 12S, 13
14, 14S, 15
16, 16S, 17
18, 19, 27
20, 21, 37
22, 23
40
40
40
40
80
80
24, 25, 61
28
80
100
100
100
120
120
120
32
36
40
44
48
486
For more information on Backshells visit www.backshellworld.com • or email: sales@backshellworld.com