The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-722-7812, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-722-7812 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Width Across Flats | 0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Material Document and Classification | QQ-N-281 CLASS A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.3125 INCHES IN |
| Specification/standard Data | 81349-MIL-DTL-1222J GOVERNMENT SPECIFICATION |
| Nut Height | 0.258 INCHES MINIMUM AND 0.273 INCHES MAXIMUM IN |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 18 |
| Material | NICKEL ALLOY 400 OVERALL |
| Bearing Surface Type | FLAT OR CHAMFERED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| LOA036473-42 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 60-07-0824B | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| 440-8843168-42 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| R4342501-42 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
| M1222N1N5C20NANN | 2/2 Government specification standardization U.S. Government activity |
NSN 5310-01-722-7812 is a Nut,plain,hexagon, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-722-7812: Width Across Flats: 0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN; Thread Series: UNIFIED NATIONAL COARSE (UNC); Material Document and Classification: QQ-N-281 CLASS A FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Thread Direction: RIGHT-HAND. 12 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.