The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-01-663-8351, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-663-8351 |
| Primary Part Number | NAS1805-8N |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Washer Outside Diameter | 0.788 INCHES MINIMUM AND 0.828 INCHES MAXIMUM IN |
| Width Across Flats | 0.616 INCHES MINIMUM AND 0.627 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416, TYPE II, CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Temp Rating | 450.0 FAHRENHEIT MAXIMUM DEGF |
| Washer Thickness | 0.064 INCHES MINIMUM AND 0.084 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.5000 INCHES IN |
| Locking Feature | FREE-RUNNING ALL METAL DESIGN |
| Surface Treatment | CADMIUM OVERALL |
| Nut Style | DOUBLE HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 20 |
| Material | STEEL CORROSION RESISTING 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 |
|---|---|
| NAS1805-8N | Huck International, Inc (USA) |
| NAS1805-8N | Bristol Industries, Llc (USA) |
| NAS1805-8N | Sps Technologies, Llc Dba PB Fasteners (USA) |
| NAS1805-8N | Howmet Global Fastening Systems Inc. Div Voi-Shan Products (USA) |
| NAS1805-8N | Howmet Fixations Simmonds SAS (FRA) |
| NAS1805-8N | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| NAS1805-8N | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-663-8351 is a Nut,self-Locking,extended Washer, manufactured by Huck International, Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-663-8351 has 6 manufacturer part numbers on file: NAS1805-8N (Huck International, Inc), NAS1805-8N (Bristol Industries, Llc), NAS1805-8N (Sps Technologies, Llc Dba PB Fasteners), NAS1805-8N (Howmet Global Fastening Systems Inc. Div Voi-Shan Products), NAS1805-8N (Howmet Fixations Simmonds SAS) and 1 more.
Key specifications for NAS1805-8N: Lubrication: DRY FILM LUBRICANT; Overall Height: 0.562 INCHES MAXIMUM IN; Washer Outside Diameter: 0.788 INCHES MINIMUM AND 0.828 INCHES MAXIMUM IN; Width Across Flats: 0.616 INCHES MINIMUM AND 0.627 INCHES MAXIMUM IN. 16 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.