The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-00-110-6299, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. Government technical data includes 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-110-6299 |
| Primary Part Number | 66439-524-2 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Washer Outside Diameter | 0.525 INCHES MINIMUM IN |
| Width Across Flats | 0.362 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Precious Material | SILVER |
| Washer Thickness | 0.110 INCHES NOMINAL IN |
| Material Document and Classification | AMS 5709 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.312 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Surface Treatment | SILVER OVERALL |
| Nut Style | DOUBLE HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 24 |
| Material | NICKEL ALLOY 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 |
|---|---|
| 66439-524-2 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 9630M05P02 | General Electric Company (USA) |
| VN1407W054-2 PRIMARY | Howmet Global Fastening Systems Inc. Div Voi-Shan Products (USA) |
| H29477-5-2 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| VN1407W054-2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-110-6299 is a Nut,self-Locking,extended Washer, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-110-6299 has 4 manufacturer part numbers on file: 66439-524-2 (Sps Technologies, Llc Dba PB Fasteners), 9630M05P02 (General Electric Company), VN1407W054-2 (Howmet Global Fastening Systems Inc. Div Voi-Shan Products), H29477-5-2 (Howmet Global Fastening Systems Inc).
Key specifications for 66439-524-2: Overall Height: 0.508 INCHES MINIMUM IN; Washer Outside Diameter: 0.525 INCHES MINIMUM IN; Width Across Flats: 0.362 INCHES MINIMUM AND 0.377 INCHES MAXIMUM IN; 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.