The Washer,key, cataloged under National Stock Number 5310-00-616-7973, 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11 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-00-616-7973 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Distance From Centerline to Inside of Prebent Key | 0.375 INCHES NOMINAL IN |
| External Prebent Key Length | 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN |
| Overall Distance Including Keys | 0.745 INCHES MINIMUM AND 0.755 INCHES MAXIMUM IN |
| Style Designator | KEY |
| Material Document and Classification | QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN |
| Material Thickness | 0.057 INCHES MINIMUM AND 0.067 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| External Prebent Key Width | 0.125 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN |
| Material | STEEL COMP 302 OVERALL |
| Hole Diameter | 0.187 INCHES MINIMUM AND 0.188 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 |
|---|---|
| 506-2936-002 | 3/9 Design control — primary reference Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
NSN 5310-00-616-7973 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-616-7973: Distance From Centerline to Inside of Prebent Key: 0.375 INCHES NOMINAL IN; External Prebent Key Length: 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN; Overall Distance Including Keys: 0.745 INCHES MINIMUM AND 0.755 INCHES MAXIMUM IN; Style Designator: KEY. 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.