The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-01-126-5271, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-126-5271 |
| Primary Part Number | 74A586450-1001 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Washer Outside Diameter | 1.200 INCHES NOMINAL IN |
| Width Across Flats | 0.688 INCHES NOMINAL IN |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Washer Thickness | 0.100 INCHES NOMINAL IN |
| Material Document and Classification | QQ-A-225/6,T851 FED SPEC SINGLE MATERIAL RESPONSE NUT |
| Material Document and Classification | QQ-A-225/6,T851 FED SPEC SINGLE MATERIAL RESPONSE WASHER |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.438 INCHES IN |
| Locking Feature | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 20 |
| Material | ALUMINUM ALLOY 2024 NUT |
| Material | PLASTIC POLYAMIDE NYLON LOCKING INSERT |
| Material | ALUMINUM ALLOY 2024 WASHER |
| 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 |
|---|---|
| 74A586450-1001 PRIMARY | The Boeing Company Div Defense (USA) |
NSN 5310-01-126-5271 is a Nut,self-Locking,extended Washer, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-126-5271 has 1 manufacturer part number on file: 74A586450-1001 (The Boeing Company Div Defense).
Key specifications for 74A586450-1001: Overall Height: 0.375 INCHES NOMINAL IN; Washer Outside Diameter: 1.200 INCHES NOMINAL IN; Width Across Flats: 0.688 INCHES NOMINAL IN; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF). 15 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.