The Washer,key, cataloged under National Stock Number 5310-00-161-6979, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-00-161-6979 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Distance From Centerline to Inside of Prebent Key | 0.210 INCHES NOMINAL IN |
| Split Key Length | 0.130 INCHES NOMINAL IN |
| Overall Distance Including Keys | 0.560 INCHES NOMINAL IN |
| Outside Diameter | 0.380 INCHES NOMINAL IN |
| External Straight Key Width | 0.250 INCHES NOMINAL IN |
| External Key Quantity | 1 |
| 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 |
|---|---|
| F306514 | 5/9 Secondary reference British Aerospace (military Aircraft & Aerostructures) |
| F318193 | C/1 Advisory reference — outside the item-of-supply concept Bae Systems (operations) Limited |
| F318193 | 3/9 Design control — primary reference British Aerospace (military Aircraft & Aerostructures) |
NSN 5310-00-161-6979 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-161-6979: Distance From Centerline to Inside of Prebent Key: 0.210 INCHES NOMINAL IN; Split Key Length: 0.130 INCHES NOMINAL IN; Overall Distance Including Keys: 0.560 INCHES NOMINAL IN; Outside Diameter: 0.380 INCHES NOMINAL IN. 6 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.