The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-00-453-1087, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Bristol Industries, Llc. Government technical data includes 12 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-453-1087 |
| Primary Part Number | AS20627 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Bristol Industries, Llc |
| Status | ACTIVE |
| Washer Outside Diameter | 0.572 INCHES NOMINAL IN |
| Width Across Flats | 0.392 INCHES NOMINAL IN |
| Thread Series | UNF |
| Washer Thickness | 0.110 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.375 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Surface Treatment | ANODIZE OVERALL |
| Nut Style | DOUBLE HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 24 |
| Material | ALUMINUM 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 |
|---|---|
| AS20627 PRIMARY | Bristol Industries, Llc (USA) |
| Reference | Meaning |
|---|---|
| AS20627 | C/1 Advisory reference — outside the item-of-supply concept Sae International Dba Sae International |
| AS20627 | 5/9 Secondary reference Society of British Aerospace Companies Ltd (sbac) |
NSN 5310-00-453-1087 is a Nut,self-Locking,extended Washer, manufactured by Bristol Industries, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-453-1087 has 1 manufacturer part number on file: AS20627 (Bristol Industries, Llc).
Key specifications for AS20627: Overall Height: 0.450 INCHES NOMINAL IN; Washer Outside Diameter: 0.572 INCHES NOMINAL IN; Width Across Flats: 0.392 INCHES NOMINAL IN; Thread Series: UNF. 12 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.