The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-437-3895, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-437-3895 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Width Across Flats | 0.423 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-N-290 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNF |
| Material Document and Classification | QQ-B-637 FED SPEC 1ST MATERIAL RESPONSE OR QQ-B-637 FED SPEC 2ND MATERIAL RESPONSE OR QQ-B-626 FED SPEC 3RD MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Nondefinitive Spec/std Data | 2 TYPE AND 13 STYLE |
| Nut Height | 0.178 INCHES MINIMUM AND 0.193 INCHES MAXIMUM IN |
| Surface Treatment | NICKEL OVERALL |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 28 |
| Material | COPPER ALLOY 462 OR COPPER ALLOY 464 OR COPPER ALLOY 360 OVERALL |
| Bearing Surface Type | 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 |
|---|---|
| MS35650-3255N | 2/2 Government specification standardization U.S. Government activity |
| FF-N-836 | 4/1 Identification reference U.S. Government activity |
NSN 5310-01-437-3895 is a Nut,plain,hexagon, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-437-3895: Width Across Flats: 0.423 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-N-290 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNF; Material Document and Classification: QQ-B-637 FED SPEC 1ST MATERIAL RESPONSE OR QQ-B-637 FED SPEC 2ND MATERIAL RESPONSE OR QQ-B-626 FED SPEC 3RD MATERIAL RESPONSE OVERALL. 14 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.