The Nut,plain,round, cataloged under National Stock Number 5310-01-245-7731, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-245-7731 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNS |
| Hardness Rating | 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | MIL-S-8844 CLASS 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Drive Point Width | 0.400 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 3.268 INCHES IN |
| Nut Diameter | 3.263 INCHES MINIMUM AND 3.268 INCHES MAXIMUM IN |
| Drive Point Depth | 0.480 INCHES NOMINAL IN |
| Nut Thickness | 1.367 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| Drive Point Quantity | 8 |
| Nut Style | ROUND |
| Thread Quantity Per Inch | 8 |
| Material | STEEL COMP 4340 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 |
|---|---|
| K616351-11 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-245-7731 is a Nut,plain,round, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-245-7731: Surface Treatment Document and Classification: QQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNS; Hardness Rating: 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM; Material Document and Classification: MIL-S-8844 CLASS 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL. 15 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.