The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-01-264-0929, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Sullair Corp. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 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 | 5310-01-264-0929 |
| Primary Part Number | 825305-283 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sullair Corp |
| Status | ACTIVE |
| Washer Outside Diameter | 0.680 INCHES MAXIMUM IN |
| Width Across Flats | 0.500 INCHES MAXIMUM IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Washer Thickness | 0.040 INCHES MINIMUM IN |
| Material Document and Classification | ASTM A533,GRADE A ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.312 INCHES IN |
| Locking Feature | FREE-RUNNING ALL METAL DESIGN |
| Surface Treatment | ZINC OVERALL |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 825305-283 PRIMARY | Sullair Corp (USA) |
NSN 5310-01-264-0929 is a Nut,self-Locking,extended Washer, manufactured by Sullair Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-264-0929 has 1 manufacturer part number on file: 825305-283 (Sullair Corp).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-576-2426. Verify interchangeability with system specifications before substitution.
Key specifications for 825305-283: Overall Height: 0.268 INCHES MINIMUM AND 0.283 INCHES MAXIMUM IN; Washer Outside Diameter: 0.680 INCHES MAXIMUM IN; Width Across Flats: 0.500 INCHES MAXIMUM IN; Thread Series: UNIFIED NATIONAL COARSE (UNC). 13 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.