AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Washer Spring Tension |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 01-391-4300 (013914300) |
| NCB Code | USA (01) |
| Manufacturer | Rolex Company, Matthews Marine Systems, Eaton Corporation |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABKW | OVERALL HEIGHT | 0.067 INCHES MINIMUM AND 0.073 INCHES MAXIMUM |
| AAUB | HOLE DIAMETER | 0.402 INCHES MINIMUM AND 0.409 INCHES MAXIMUM |
| ABPX | MATERIAL THICKNESS | 0.047 INCHES MINIMUM AND 0.051 INCHES MAXIMUM |
| MATT | MATERIAL | STEEL COMP 1095 OVERALL |
| SFTT | SURFACE TREATMENT | OXIDE OVERALL |
| STYL | STYLE DESIGNATOR | SPRING TENSION |
| CQFM | HARDNESS RATING | 46.0 ROCKWELL C MINIMUM AND 49.0 ROCKWELL C MAXIMUM |
| HUES | COLOR | BLACK OVERALL |
| ABKV | OUTSIDE DIAMETER | 0.779 INCHES MINIMUM AND 0.787 INCHES MAXIMUM |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-13924 CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Relevant Components for NSN - 5310-01-391-4300, 5310013914300 | ||||
| 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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