The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-221-7924, 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12 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-221-7924 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Width Across Flats | 0.156 INCHES NOMINAL IN |
| Thread Series | UNF |
| Nut Counterbore Depth | 0.011 INCHES MINIMUM AND 0.015 INCHES MAXIMUM BASE IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.060 INCHES IN |
| Counterbore Diameter | 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM BASE IN |
| Nut Height | 0.047 INCHES NOMINAL IN |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 80 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Bearing Surface Type | FLAT |
| 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 |
|---|---|
| 8019021-001 | 3/9 Design control — primary reference Ballistic Missile Office /afsc/ |
NSN 5310-01-221-7924 is a Nut,plain,hexagon, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-221-7924: Width Across Flats: 0.156 INCHES NOMINAL IN; Thread Series: UNF; Nut Counterbore Depth: 0.011 INCHES MINIMUM AND 0.015 INCHES MAXIMUM BASE IN; 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.