The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-01-333-4486, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Div Voi-Shan Products. Government technical data includes 21 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-333-4486 |
| Primary Part Number | VN376B048W |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Howmet Global Fastening Systems Inc. Div Voi-Shan Products |
| Status | ACTIVE |
| Washer Outside Diameter | 0.505 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN |
| Width Across Flats | 0.305 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-S-365 FED SPEC SINGLE TREATMENT RESPONSE OR AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Precious Material | SILVER |
| Temp Rating | 800.0 FAHRENHEIT MAXIMUM DEGF |
| Washer Thickness | 0.113 INCHES MINIMUM AND 0.123 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Material Document and Classification | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE NUT |
| Material Document and Classification | AMS 5525 ASSN STD 1ST MATERIAL RESPONSE OR AMS 5737 ASSN STD 2ND MATERIAL RESPONSE WASHER |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Surface Treatment | PASSIVATE WASHER |
| Surface Treatment | SILVER OVERALL |
| Surface Treatment | SILVER NUT |
| Precious Material and Location | ALL SURFACES SILVER |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| 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 |
| Part Number | Manufacturer |
|---|---|
| VN376B048W PRIMARY | Howmet Global Fastening Systems Inc. Div Voi-Shan Products (USA) |
| 92652-4 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HK52738-4 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| BH00182C4 PRIMARY | Bristol Industries, Llc (USA) |
| Reference | Meaning |
|---|---|
| VN376B048W | 5/9 Secondary reference U.S. Government activity |
| S4933652-4 | 5/9 Secondary reference U.S. Government activity |
| 101E11004-4 | 5/9 Secondary reference U.S. Government activity |
| 3D0007-4 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-333-4486 is a Nut,self-Locking,extended Washer, manufactured by Howmet Global Fastening Systems Inc. Div Voi-Shan Products, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-333-4486 has 4 manufacturer part numbers on file: VN376B048W (Howmet Global Fastening Systems Inc. Div Voi-Shan Products), 92652-4 (Sps Technologies, Llc Dba PB Fasteners), HK52738-4 (Howmet Global Fastening Systems Inc), BH00182C4 (Bristol Industries, Llc).
Key specifications for VN376B048W: Overall Height: 0.292 INCHES MAXIMUM IN; Washer Outside Diameter: 0.505 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN; Width Across Flats: 0.305 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-S-365 FED SPEC SINGLE TREATMENT RESPONSE OR AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL. 21 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.