AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Washer Lock |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 01-256-9731 (012569731) |
| NCB Code | USA (01) |
| Manufacturer | Federal Specifications, Military Standards Corp |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAUB | HOLE DIAMETER | 0.195 INCHES MINIMUM AND 0.204 INCHES MAXIMUM |
| ABKV | OUTSIDE DIAMETER | 0.365 INCHES MINIMUM AND 0.381 INCHES MAXIMUM |
| ABPX | MATERIAL THICKNESS | 0.020 INCHES MINIMUM AND 0.025 INCHES MAXIMUM |
| CQFM | HARDNESS RATING | 89.0 ROCKWELL B MINIMUM AND 94.0 ROCKWELL B MAXIMUM |
| MATT | MATERIAL | STEEL COMP 1050 OVERALL OR STEEL COMP 1551 OVERALL OR STEEL COMP 1552 OVERALL OR STEEL COMP 1053 OVERALL OR STEEL COMP 1054 OVERALL OR STEEL COMP 1055 OVERALL OR STEEL COMP 1059 OVERALL OR STEEL COMP 1060 OVERALL OR STEEL COMP 1561 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| SFTT | SURFACE TREATMENT | ZINC OVERALL AND CHROMATE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM B633 TYPE 2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | FLAT INTERNAL TEETH |
| Relevant Components for NSN - 5310-01-256-9731, 5310012569731 | ||||
| 5355-00-582-7370 (5355005827370) | 5340-01-492-4288 (5340014924288) | 5340-00-523-3711 (5340005233711) | 5330-01-275-9444 (5330012759444) | |
| 5340-01-238-2053 (5340012382053) | 5365-01-693-2245 (5365016932245) | 5331-01-258-8240 (5331012588240) | 5365-01-672-1629 (5365016721629) | |
| 5365-01-432-4280 (5365014324280) | 5365-01-654-1906 (5365016541906) | 5340-01-451-0804 (5340014510804) | 5340-01-489-6012 (5340014896012) | |
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