The Washer,key, cataloged under National Stock Number 5310-00-579-0331, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-579-0331 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Distance From Centerline to Inside of Prebent Key | 0.210 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN |
| External Prebent Key Length | 0.080 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN |
| Overall Distance Including Keys | 0.550 INCHES MINIMUM AND 0.570 INCHES MAXIMUM IN |
| Style Designator | KEY |
| Material Document and Classification | QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.440 INCHES MINIMUM AND 0.460 INCHES MAXIMUM IN |
| Material Thickness | 0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN |
| External Prebent Key Width | 0.110 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN |
| Material | STEEL COMP 302 OVERALL |
| Hole Diameter | 0.260 INCHES MINIMUM AND 0.280 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 |
|---|---|
| 195986PC9 | 3/9 Design control — primary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| 8Z1024PC309 | 5/9 Secondary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 5310-00-579-0331 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-579-0331: Distance From Centerline to Inside of Prebent Key: 0.210 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN; External Prebent Key Length: 0.080 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN; Overall Distance Including Keys: 0.550 INCHES MINIMUM AND 0.570 INCHES MAXIMUM IN; Style Designator: KEY. 10 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.