| Item Name | Nut Self Locking Hexagon |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5310 Nuts and Washers |
| National Item Identification Number (NIIN) | 00-878-5931 (008785931) |
| NCB Code | USA (00) |
| Manufacturer | British Standards Institution, Martin Baker Aircraft Co Ltd |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3B |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| ADEA | NUT HEIGHT | 0.340 INCHES NOMINAL |
| ASDB | WIDTH ACROSS FLATS | 0.431 INCHES MINIMUM AND 0.438 INCHES MAXIMUM |
| AZKQ | TEMP RATING | -75.0 DEG CELSIUS MINIMUM AND 200.0 DEG CELSIUS MAXIMUM |
| BZRR | THREAD SERIES | UNF |
| CMLP | THREAD QUANTITY PER INCH | 28 |
| CQJX | NOMINAL THREAD SIZE | 0.250 INCHES |
| CRSQ | COUNTERSINK ANGLE | 90.0 DEGREES MINIMUM NUT AND 120.0 DEGREES MAXIMUM NUT |
| CRTM | BEARING SURFACE TYPE | FLAT OR CHAMFERED |
| MATT | MATERIAL | STEEL NUT |
| SFTT | SURFACE TREATMENT | CADMIUM NUT |
| AAUM | LOCKING FEATURE | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| ACTA | NUT STYLE | HEXAGON |
| MATT | MATERIAL | FIBER LOCKING INSERT |
| Components Related to NSN - 5310-00-878-5931, 5310008785931 | ||||
| 5305-01-222-3196 (5305012223196) | 5340-01-420-2904 (5340014202904) | 5305-01-506-5038 (5305015065038) | 5307-01-093-0586 (5307010930586) | |
| 5306-01-455-2212 (5306014552212) | 5320-01-425-9724 (5320014259724) | 5330-01-429-5246 (5330014295246) | 5340-01-359-3660 (5340013593660) | |
| 5330-01-524-1191 (5330015241191) | 5320-00-395-6445 (5320003956445) | 5310-01-510-7415 (5310015107415) | 5310-01-104-8190 (5310011048190) | |
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