AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Washer Flat |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 01-025-6451 (010256451) |
| NCB Code | USA (01) |
| Manufacturer | National Aerospace Standards Com, Lockheed Martin Corporation, Military Standards Corp |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAGR | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR |
| AAUB | HOLE DIAMETER | 0.376 INCHES MINIMUM AND 0.380 INCHES MAXIMUM |
| ABMW | PERIPHERAL SHAPE STYLE | ROUND |
| ABMX | CENTER HOLE SHAPE STYLE | ROUND |
| ABNM | THICKNESS | 0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM |
| ADAV | OVERALL DIAMETER | 0.702 INCHES MINIMUM AND 0.712 INCHES MAXIMUM |
| CQFM | HARDNESS RATING | 39.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM |
| MATT | MATERIAL | STEEL OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL OR MIL-S-18729 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Relevant Components for NSN - 5310-01-025-6451, 5310010256451 | ||||
| 5305-00-825-1285 (5305008251285) | 5315-01-177-1845 (5315011771845) | 5340-01-536-0624 (5340015360624) | 5330-01-398-3824 (5330013983824) | |
| 5365-00-602-2520 (5365006022520) | 5340-01-658-6711 (5340016586711) | 5306-00-488-7520 (5306004887520) | 5310-00-443-4905 (5310004434905) | |
| 5305-00-579-4230 (5305005794230) | 5306-01-488-3599 (5306014883599) | 5340-01-429-0378 (5340014290378) | 5305-01-208-9074 (5305012089074) | |
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