The Nut,plain,barrel, cataloged under National Stock Number 5310-00-121-9591, 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12 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-00-121-9591 |
| Item Name | Nut,plain,barrel |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Nut Length | 0.304 INCHES NOMINAL IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Material Document and Classification | QQ-B-626 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.138 INCHES IN |
| Nut Diameter | 0.250 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| Nut Style | PLAIN BARREL |
| Thread Class | 2B |
| Thread Quantity Per Inch | 32 |
| Material | COPPER ALLOY 268 OR COPPER ALLOY 260 OR COPPER ALLOY 240 OR COPPER ALLOY 230 OR COPPER ALLOY 377 OR COPPER ALLOY 360 OR COPPER ALLOY 342 OR COPPER ALLOY 353 OR COPPER ALLOY 262 OR COPPER ALLOY 270 OR COPPER ALLOY 274 OR COPPER ALLOY 280 OR COPPER ALLOY 330 OR COPPER ALLOY 331 OR COPPER ALLOY 332 OR COPPER ALLOY 335 OR COPPER ALLOY 340 OR COPPER ALLOY 344 OR COPPER ALLOY 345 OR COPPER ALLOY 347 OR COPPER ALLOY 348 OR COPPER ALLOY 350 OR COPPER ALLOY 356 OR COPPER ALLOY 370 OR COPPER ALLOY 462 OR COPPER ALLOY 464 OR COPPER ALLOY 465 OR COPPER ALLOY 466 OR COPPER ALLOY 467 OR COPPER ALLOY 482 OR COPPER ALLOY 485 OVERALL |
| Distance From Centerline of Threaded Hole to End of Nut | 0.152 INCHES NOMINAL IN |
| 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 |
|---|---|
| 1031080 | 3/2 Design control — primary reference U.S. Government activity |
| 1031080 | 5/9 Secondary reference The Boeing Company |
NSN 5310-00-121-9591 is a Nut,plain,barrel, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-121-9591: Nut Length: 0.304 INCHES NOMINAL IN; Thread Series: UNIFIED NATIONAL COARSE (UNC); Material Document and Classification: QQ-B-626 FED SPEC ALL MATERIAL RESPONSES OVERALL; 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.