The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-281-0563, 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14 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-281-0563 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Width Across Flats | 1.812 INCHES MINIMUM AND 1.875 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | ASTM B633, TY 2 OR TY 3 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Material Document and Classification | FF-N-836,GRADE B FED SPEC SINGLE MATERIAL RESPONSE OR FF-N-836,GRADE C FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.250 INCHES IN |
| Departure From Cited Document | AS MODIFIED BY SURFACE TREATMENT |
| Nut Height | 1.030 INCHES MINIMUM AND 1.094 INCHES MAXIMUM IN |
| Surface Treatment | ZINC AND CHROMATE OVERALL |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 7 |
| Material | STEEL OVERALL |
| Bearing Surface Type | CHAMFERED OR WASHER FACED |
| 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 |
|---|---|
| 12387305-35 | 5/1 Secondary reference U S Army Tank Automotive Command Amsta-Im-Mm |
| MS51967-35 | 2/2 Government specification standardization U.S. Government activity |
NSN 5310-01-281-0563 is a Nut,plain,hexagon, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-281-0563: Width Across Flats: 1.812 INCHES MINIMUM AND 1.875 INCHES MAXIMUM IN; Surface Treatment Document and Classification: ASTM B633, TY 2 OR TY 3 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNIFIED NATIONAL COARSE (UNC); Material Document and Classification: FF-N-836,GRADE B FED SPEC SINGLE MATERIAL RESPONSE OR FF-N-836,GRADE C FED SPEC SINGLE 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.