The Washer,key, cataloged under National Stock Number 5310-01-481-8078, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-481-8078 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Overall Distance Including Keys | 0.985 INCHES NOMINAL IN |
| Style Designator | KEY |
| Material Document and Classification | QQ-C-533 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Material Thickness | 0.040 INCHES NOMINAL IN |
| External Key Quantity | 9 |
| Surface Treatment | NICKEL OVERALL |
| Material | COPPER ALLOY 172 OVERALL |
| Hole Diameter | 0.398 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| SC-C-681388-3 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-481-8078 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-481-8078: Overall Distance Including Keys: 0.985 INCHES NOMINAL IN; Style Designator: KEY; Material Document and Classification: QQ-C-533 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Material Thickness: 0.040 INCHES NOMINAL IN. 8 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.