The Washer,key, cataloged under National Stock Number 5310-01-339-6526, 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11 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-339-6526 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| External Straight Key Length | 0.094 INCHES MINIMUM AND 0.126 INCHES MAXIMUM IN |
| Overall Distance Including Keys | 1.953 INCHES MINIMUM AND 1.985 INCHES MAXIMUM IN |
| Style Designator | KEY |
| Material Document and Classification | QQ-N-281 CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.703 INCHES MINIMUM AND 0.735 INCHES MAXIMUM IN |
| Peening Key Length | 1.125 INCHES MINIMUM AND 1.157 INCHES MAXIMUM IN |
| Material Thickness | 0.034 INCHES MINIMUM AND 0.066 INCHES MAXIMUM IN |
| External Straight Key Width | 0.172 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN |
| External Key Quantity | 7 |
| Material | NICKEL ALLOY 400 OVERALL |
| Hole Diameter | 0.365 INCHES MINIMUM AND 0.397 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 |
|---|---|
| SS845-2050868 PIECE 104 | 3/2 Design control — primary reference U.S. Government activity |
| 60-28-6584 | 5/9 Secondary reference Spirol Shim Co Inc a Spirol International Co |
| 2640-328 PIECE 104 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-339-6526 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-339-6526: External Straight Key Length: 0.094 INCHES MINIMUM AND 0.126 INCHES MAXIMUM IN; Overall Distance Including Keys: 1.953 INCHES MINIMUM AND 1.985 INCHES MAXIMUM IN; Style Designator: KEY; Material Document and Classification: QQ-N-281 CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 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.