The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-700-5666, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-700-5666 |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Lubrication | SOLUBLE LUBRICANT |
| Width Across Flats | 1.614 INCHES MINIMUM AND 1.627 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | AMS 2700,METHOD 1,CLASS 4 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Temp Rating | 250.0 FAHRENHEIT NOMINAL DEGF |
| Material Document and Classification | AMS 5688,5636,5637 OR AMS-QQ-S-760 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5460 ASSN STD 2ND MATERIAL RESPONSE OR ASTM A581 OR A582 AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) 2ND MATERIAL RESPONSE OR AMS 5647,5639 OR AMS-QQ-S-760 ASSN STD 3RD MATERIAL RESPONSE OR ASTM A276 AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) 4TH MATERIAL RESPONSE OR AMS-QQ-S-760 ASSN STD 4TH MATERIAL RESPONSE OR ASTM A493 AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) 5TH MATERIAL RESPONSE OR AMS 5647 OR AMS-QQ-S-763 ASSN STD 5TH MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.1250 INCHES IN |
| Specification/standard Data | 80205-NAS-21083 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Locking Feature | NYLON INSERT |
| Nut Height | 0.610 INCHES MINIMUM AND 0.672 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 12 |
| Material | STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 304H OR STEEL COMP 304L 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 |
|---|---|
| MS21083C18 | 3/2 Design control — primary reference U.S. Government activity |
| NASM25027 | 3/1 Design control — primary reference U.S. Government activity |
NSN 5310-01-700-5666 is a Nut,self-Locking,hexagon, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-700-5666: Lubrication: SOLUBLE LUBRICANT; Width Across Flats: 1.614 INCHES MINIMUM AND 1.627 INCHES MAXIMUM IN; Surface Treatment Document and Classification: AMS 2700,METHOD 1,CLASS 4 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF). 17 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.