The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-481-2273, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Bath Iron Works Corporation. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-481-2273 |
| Primary Part Number | 8100-1256-0262 PT NO 238 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Bath Iron Works Corporation |
| Status | ACTIVE |
| Width Across Flats | 1.269 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Material Document and Classification | MIL-S-1222G,TY2,GR651 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL G |
| Thread Direction | LEFT-HAND |
| Nominal Thread Size | 0.875 INCHES IN |
| Nut Height | 0.458 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 9 |
| Material | COPPER ALLOY 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 |
| Part Number | Manufacturer |
|---|---|
| 8100-1256-0262 PT NO 238 PRIMARY | Bath Iron Works Corporation (USA) |
NSN 5310-01-481-2273 is a Nut,plain,hexagon, manufactured by Bath Iron Works Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-481-2273 has 1 manufacturer part number on file: 8100-1256-0262 PT NO 238 (Bath Iron Works Corporation).
Key specifications for 8100-1256-0262 PT NO 238: Width Across Flats: 1.269 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN; Thread Series: UNIFIED NATIONAL COARSE (UNC); Material Document and Classification: MIL-S-1222G,TY2,GR651 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL G; Thread Direction: LEFT-HAND. 11 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.