The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-00-966-9596, 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 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-966-9596 |
| Primary Part Number | FN12M080 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Washer Outside Diameter | 0.826 INCHES NOMINAL IN |
| Width Across Flats | 0.620 INCHES MINIMUM AND 0.627 INCHES MAXIMUM IN |
| Thread Series | UNF |
| Temp Rating | 450.0 FAHRENHEIT NOMINAL DEGF |
| Washer Thickness | 0.085 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.500 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Surface Treatment | CADMIUM OVERALL |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 20 |
| 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 |
|---|---|
| H29191-8 | Howmet Global Fastening Systems Inc (USA) |
| FN12M080 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| LH8311-080 | 5/9 Secondary reference Harvard Industries Inc |
| VN329A-080 | 5/2 Secondary reference U.S. Government activity |
| C610-080 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5310-00-966-9596 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 5310-00-966-9596 has 2 manufacturer part numbers on file: H29191-8 (Howmet Global Fastening Systems Inc), FN12M080 (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for FN12M080: Lubrication: DRY FILM LUBRICANT; Overall Height: 0.328 INCHES NOMINAL IN; Washer Outside Diameter: 0.826 INCHES NOMINAL IN; Width Across Flats: 0.620 INCHES MINIMUM AND 0.627 INCHES MAXIMUM IN. 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.