The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-00-929-6313, 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. Government technical data includes 13 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-929-6313 |
| Primary Part Number | HW14-4 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Washer Outside Diameter | 0.464 INCHES MAXIMUM IN |
| Width Across Flats | 0.313 INCHES NOMINAL IN |
| Thread Series | UNF |
| Temp Rating | 500.0 FAHRENHEIT NOMINAL DEGF |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| 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 |
|---|---|
| HW14-4 | Boeing Distribution Services SAS (FRA) |
| HW14-4 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| 962324C1 | Rtx Corporation Div Pratt & Whitney (USA) |
| HW14-4 | Leonardo Spa Aeronautics Division - Pomigliano D'arco Site (ITA) |
| Reference | Meaning |
|---|---|
| HW14-4 | 5/9 Secondary reference Tecnotec Sarl |
| HW14-4 | 5/1 Secondary reference Bae Systems (operations) Ltd, Military Aircraft Division, Repair Stores |
| HW14-4 | 5/9 Secondary reference Klx Aerospace Solutions II SAS |
| HW14-4 | 5/1 Secondary reference Bae Systems (operations) Limited |
| 5310PL2023118 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5310-00-929-6313 is a Nut,self-Locking,extended Washer, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-929-6313 has 4 manufacturer part numbers on file: HW14-4 (Boeing Distribution Services SAS), HW14-4 (Howmet Global Fastening Systems Inc), 962324C1 (Rtx Corporation Div Pratt & Whitney), HW14-4 (Leonardo Spa Aeronautics Division - Pomigliano D'arco Site).
Key specifications for HW14-4: Lubrication: DRY FILM LUBRICANT; Overall Height: 0.245 INCHES MAXIMUM IN; Washer Outside Diameter: 0.464 INCHES MAXIMUM IN; Width Across Flats: 0.313 INCHES NOMINAL IN. 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.