The Washer,lock, cataloged under National Stock Number 5310-01-485-4205, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Federal Commercial Item Description Promulgated by General Services Administration Washington DC. Government technical data includes 6 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 | 5310-01-485-4205 |
| Primary Part Number | A-A-55610-134 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Federal Commercial Item Description Promulgated by General Services Administration Washington DC |
| Status | ACTIVE |
| Style Designator | SPLIT HELICAL-RIGHT HAND |
| Outside Diameter | 0.172 INCHES MAXIMUM IN |
| Material Thickness | 0.020 INCHES MINIMUM IN |
| Surface Treatment | PASSIVATE AND OXIDE OVERALL |
| Material | STEEL CORROSION RESISTING OVERALL |
| Hole Diameter | 0.088 INCHES MINIMUM AND 0.094 INCHES MAXIMUM IN |
| 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 |
|---|---|
| A-A-55610-134 | Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA) |
NSN 5310-01-485-4205 is a Washer,lock, manufactured by Federal Commercial Item Description Promulgated by General Services Administration Washington DC, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-485-4205 has 1 manufacturer part number on file: A-A-55610-134 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC).
Key specifications for A-A-55610-134: Style Designator: SPLIT HELICAL-RIGHT HAND; Outside Diameter: 0.172 INCHES MAXIMUM IN; Material Thickness: 0.020 INCHES MINIMUM IN; Special Features: PASSIVATED, BLACK OXIDE COATING FINISH. 6 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.