BACKSHELLS
Materials & Finishes, Assembly Torque Values
MATERIALS & FINISHES Amphenol offers adapters in the following standard finishes. The base material is aluminum alloy. MATERIAL: Aluminum parts: As per ASTM B 211, 221, 209, 85, 26 Steel parts:
MIL (QPL) QUALIFICATION Many Amphenol Backshells are qualified to SAE-AS 85049 standard. (Old standard is MIL-C-85049).
300 series, as per AMS-QQ-S-763/ASTM A 582
Elastomers: Other parts:
FFlourselicone, Silicone
Suitable corrosion resistant material
TABLE-2 (PLATING FINISHES)
MIL Designation
Amphenol Designation
Finish
Guiding Specifications/Requirements
L
Nickel, Bright
AMS-QQ-290, Class-1, Grade-F AMS-C-26074, Class-4, Grade-B To meet AS85049 requirements AMS-QQ-P-416, Type II, Class 3
M N U
Electroless Nickel Electroless Nickel
N
Cadmium, Olive drab
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
W
Cadmium, Olive drab over Electroless Nickel
To meet AS85049 requirements
* * *
T
Durmalon
AP-93
Z
Black Zinc Nickel
* Contact Factory
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
40 40 40 40
1.00 INCH (MAX.) 25.4 MM (MAX.)
10 12 14
* Contact Sales@Backshellworld.com for part numbers & availability
48
Contact Amphenol Aerospace for more information at 800-678-0141 • www.amphenol-aerospace.com
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