The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-00-256-1503, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Safran Transmission Systems. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-256-1503 |
| Primary Part Number | 282571 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Safran Transmission Systems |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Washer Outside Diameter | 1.052 INCHES MINIMUM AND 1.062 INCHES MAXIMUM IN |
| Width Across Flats | 0.775 INCHES MINIMUM AND 0.783 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Temp Rating | 450.0 FAHRENHEIT NOMINAL DEGF |
| Washer Thickness | 0.143 INCHES MINIMUM AND 0.163 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.625 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Surface Treatment | CADMIUM OVERALL |
| Countersink Angle | 90.0 DEGREES NOMINAL BOTH ENDS |
| Nut Style | DOUBLE HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 18 |
| 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 |
NSN 5310-00-256-1503 is a Nut,self-Locking,extended Washer, manufactured by Safran Transmission Systems, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-256-1503 has 3 manufacturer part numbers on file: 282571 (Safran Transmission Systems), VN465A108 (Fairchild Fasteners Europe - Vsd Gmbh), 282571 (Safran Landing Systems).
Key specifications for 282571: Lubrication: DRY FILM LUBRICANT; Overall Height: 0.667 INCHES MINIMUM AND 0.677 INCHES MAXIMUM IN; Washer Outside Diameter: 1.052 INCHES MINIMUM AND 1.062 INCHES MAXIMUM IN; Width Across Flats: 0.775 INCHES MINIMUM AND 0.783 INCHES MAXIMUM IN. 16 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.