The Nut,plain,round, cataloged under National Stock Number 5310-01-581-0687, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-581-0687 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Treatment Document and Classification | AMS2481 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNJS |
| Material Document and Classification | AMS6381 ASSN STD SINGLE MATERIAL RESPONSE OR AMS6382 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nut Diameter | 1.490 INCHES MINIMUM AND 1.510 INCHES MAXIMUM IN |
| Nut Thickness | 0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN |
| Drive Point Diameter | 0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN |
| Surface Treatment | PHOSPHATE OVERALL |
| Nut Style | ROUND |
| Thread Class | 3B |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| 90-118-2 | 3/2 Design control — primary reference U.S. Government activity |
| 90-118 | D/9 Drawing number reference only U.S. Government activity |
NSN 5310-01-581-0687 is a Nut,plain,round, classified under FSC 5310, Nuts and Washers. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5331-01-659-6350. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-01-581-0687: Surface Treatment Document and Classification: AMS2481 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNJS; Material Document and Classification: AMS6381 ASSN STD SINGLE MATERIAL RESPONSE OR AMS6382 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Thread Direction: RIGHT-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.