The Washer,key, cataloged under National Stock Number 5310-00-903-3596, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-903-3596 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Distance From Centerline to Inside of Prebent Key | 0.295 INCHES MINIMUM AND 0.305 INCHES MAXIMUM IN |
| External Prebent Key Length | 0.063 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN |
| Overall Distance Including Keys | 0.585 INCHES MINIMUM AND 0.595 INCHES MAXIMUM IN |
| Style Designator | KEY |
| Outside Diameter | 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN |
| Material Thickness | 0.035 INCHES MINIMUM AND 0.041 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| External Prebent Key Width | 0.162 INCHES MAXIMUM IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Hole Diameter | 0.253 INCHES MINIMUM AND 0.256 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 |
| Reference | Meaning |
|---|---|
| 280179 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5310-00-903-3596 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5962-01-412-0243. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-00-903-3596: Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Distance From Centerline to Inside of Prebent Key: 0.295 INCHES MINIMUM AND 0.305 INCHES MAXIMUM IN; External Prebent Key Length: 0.063 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN; Overall Distance Including Keys: 0.585 INCHES MINIMUM AND 0.595 INCHES MAXIMUM IN. 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.