The Washer,key, cataloged under National Stock Number 5310-01-212-0107, 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11 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-212-0107 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Distance From Centerline to End of Longest Key | 2.375 INCHES NOMINAL IN |
| External Straight Key Length | 0.344 INCHES NOMINAL IN |
| Overall Distance Including Keys | 1.735 INCHES NOMINAL IN |
| Heat Treatment | ANNEALED |
| Material Document and Classification | QQ-N-281,CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.469 INCHES NOMINAL IN |
| Material Thickness | 0.062 INCHES NOMINAL IN |
| External Straight Key Width | 0.438 INCHES NOMINAL IN |
| External Key Quantity | 2 |
| Material | NICKEL ALLOY 400 OVERALL |
| Hole Diameter | 0.906 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 |
|---|---|
| SS845-2050868 PIECE 5 | 3/2 Design control — primary reference U.S. Government activity |
| 60-28-6533 | 3/9 Design control — primary reference U.S. Government activity |
| 2640-328 PIECE 5 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-01-212-0107 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-212-0107: Distance From Centerline to End of Longest Key: 2.375 INCHES NOMINAL IN; External Straight Key Length: 0.344 INCHES NOMINAL IN; Overall Distance Including Keys: 1.735 INCHES NOMINAL IN; Heat Treatment: ANNEALED. 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.