The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-01-367-8954, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Parker-Hannifin Corporation. Government technical data includes 11 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 | 5310-01-367-8954 |
| Primary Part Number | A4090-1-030 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Parker-Hannifin Corporation |
| Status | ACTIVE |
| Washer Outside Diameter | 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN |
| Width Across Flats | 0.740 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Washer Thickness | 0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.500 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 13 |
| 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 |
|---|---|
| A4090-1-030 PRIMARY | Parker-Hannifin Corporation (USA) |
NSN 5310-01-367-8954 is a Nut,self-Locking,extended Washer, manufactured by Parker-Hannifin Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-367-8954 has 1 manufacturer part number on file: A4090-1-030 (Parker-Hannifin Corporation).
Key specifications for A4090-1-030: Overall Height: 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN; Washer Outside Diameter: 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM IN; Width Across Flats: 0.740 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN; Thread Series: UNIFIED NATIONAL COARSE (UNC). 11 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.