The Washer,key, cataloged under National Stock Number 5310-01-351-4339, 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11 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-351-4339 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Wire Hole Diameter | 0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Internal Prebent Key Width | 0.047 INCHES MINIMUM AND 0.057 INCHES MAXIMUM IN |
| Distance From Key Center to Wire Hole Center | 0.100 INCHES NOMINAL IN |
| Style Designator | INTERNAL PREBENT KEY |
| Material Document and Classification | MIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.560 INCHES NOMINAL IN |
| Material Thickness | 0.040 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 304 OVERALL |
| Hole Diameter | 0.214 INCHES MINIMUM AND 0.224 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 |
|---|---|
| 750879 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-351-4339 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-351-4339: Wire Hole Diameter: 0.052 INCHES MINIMUM AND 0.072 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Internal Prebent Key Width: 0.047 INCHES MINIMUM AND 0.057 INCHES MAXIMUM IN; Distance From Key Center to Wire Hole Center: 0.100 INCHES NOMINAL 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.