The Nut,plain,internal Wrenching, cataloged under National Stock Number 5310-01-324-4100, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-324-4100 |
| Item Name | Nut,plain,internal Wrenching |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Hardness Rating | 38.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.138 INCHES IN |
| Nut Diameter | 0.253 INCHES MINIMUM AND 0.274 INCHES MAXIMUM IN |
| Width Between Flats | 0.156 INCHES NOMINAL IN |
| Nut Height | 0.223 INCHES NOMINAL IN |
| Internal Drive Style | DOUBLE HEXAGON |
| Countersink Angle | 120.0 DEGREES NOMINAL NUT |
| Nut Style | INTERNAL WRENCHING |
| Thread Class | 2B |
| Thread Quantity Per Inch | 32 |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| 3169371 | 3/9 Design control — primary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| 3169371 | 5/9 Secondary reference Bae Systems Land & Armaments L.p. |
NSN 5310-01-324-4100 is a Nut,plain,internal Wrenching, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-324-4100: Thread Series: UNIFIED NATIONAL COARSE (UNC); Hardness Rating: 38.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM; Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.138 INCHES IN. 13 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.