The Nut,plain,hexagon, cataloged under National Stock Number 5310-00-208-5255, 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12 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-208-5255 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Width Across Flats | 0.812 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-416 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| Thread Series | UNF |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.625 INCHES IN |
| Nut Height | 0.250 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OR ZINC OVERALL |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 18 |
| Material | STEEL 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 |
|---|---|
| 190785 | 4/1 Identification reference Army Weapons Command Attn Amswe-Ree-S |
| 5310002085255 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
NSN 5310-00-208-5255 is a Nut,plain,hexagon, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-208-5255: Width Across Flats: 0.812 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-416 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325 FED SPEC 2ND TREATMENT RESPONSE OVERALL; Thread Series: UNF; 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.