The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-01-725-7708, 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14 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-725-7708 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Washer Outside Diameter | 1.580 INCHES MINIMUM IN |
| Surface Treatment Document and Classification | AMS 2700,METHOD 1,CLASS 4 NATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Washer Thickness | 0.170 INCHES MINIMUM IN |
| Material Document and Classification | AMS5732 OR 5737 NATIONAL STD/SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.00 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL NONMETALLIC DESIGN |
| Surface Treatment | PASSIVATE OVERALL |
| Drive Point Quantity | 38 |
| Nut Style | SPLINE DRIVE |
| Thread Class | 3B |
| Thread Quantity Per Inch | 18 |
| Material | IRON ALLOY 660 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 |
|---|---|
| 90-116-16L | 3/2 Design control — primary reference U.S. Government activity |
| 90-116 | D/9 Drawing number reference only U.S. Government activity |
NSN 5310-01-725-7708 is a Nut,self-Locking,extended Washer, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-725-7708: Overall Height: 1.210 INCHES MAXIMUM IN; Washer Outside Diameter: 1.580 INCHES MINIMUM IN; Surface Treatment Document and Classification: AMS 2700,METHOD 1,CLASS 4 NATIONAL STD/SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF). 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.