AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Spring Helical Extension |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5360 Coil Flat Leaf and Wire Springs |
| National Item Identification Number (NIIN) | 00-731-0031 (007310031) |
| NCB Code | USA (00) |
| Manufacturer | Springfield Armory |
| MRC | Criteria | Characteristic |
|---|---|---|
| AARX | INSIDE DIAMETER | 0.098 INCHES MINIMUM AND 0.102 INCHES MAXIMUM |
| ABQK | END STYLE | MACHINE LOOP BOTH ENDS |
| AGEK | SPRING FREE LENGTH | 1.563 INCHES MINIMUM AND 1.625 INCHES MAXIMUM |
| AXLQ | SPRING FREE OUTSIDE DIAMETER | 0.130 INCHES MINIMUM AND 0.134 INCHES MAXIMUM |
| AXMC | HOOK RADIUS | 0.050 INCHES NOMINAL BOTH ENDS |
| CXTJ | COIL TO HOOK INSIDE LENGTH | 0.100 INCHES MAXIMUM BOTH ENDS |
| FEAT | SPECIAL FEATURES | LOOPS CRIMPED SO THAT END OF SPRING ENTERS AT LEAST TWO COILS WITHOUT TOUCHING ID OF SPRING |
| MATT | MATERIAL | STEEL COMP 1085 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-W-13604-CANCELED MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | CYLINDRICAL |
| APCN | COIL QUANTITY | 81 |
| APGF | DESIGN TYPE | CLOSED |
| AXLH | COIL HELIX DIRECTION | LEFT-HAND |
| SFTT | SURFACE TREATMENT | PHOSPHATE OVERALL |
| Relevant Components for NSN - 5360-00-731-0031, 5360007310031 | ||||
| 5320-01-311-2514 (5320013112514) | 5365-01-606-7886 (5365016067886) | 5310-01-687-5946 (5310016875946) | 5331-01-345-2325 (5331013452325) | |
| 5331-01-137-6352 (5331011376352) | 5340-01-677-5187 (5340016775187) | 5310-01-215-1121 (5310012151121) | 5330-01-558-9303 (5330015589303) | |
| 5320-01-007-1870 (5320010071870) | 5365-00-542-0989 (5365005420989) | 5305-01-279-0723 (5305012790723) | 5315-01-181-8363 (5315011818363) | |
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