The Washer,key, cataloged under National Stock Number 5310-00-290-3765, 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11 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-290-3765 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Distance From Centerline to Inside of Prebent Key | 0.340 INCHES NOMINAL IN |
| External Prebent Key Length | 0.120 INCHES NOMINAL IN |
| Overall Distance Including Keys | 0.800 INCHES NOMINAL IN |
| Style Designator | KEY |
| Material Document and Classification | QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.620 INCHES NOMINAL IN |
| Material Thickness | 0.0625 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| External Prebent Key Width | 0.170 INCHES NOMINAL IN |
| Material | STEEL COMP 301 OVERALL |
| Hole Diameter | 0.330 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 |
|---|---|
| 211329-11 | 5/1 Secondary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| 63077-5310-6 | 3/9 Design control — primary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| 5310-201 | 5/9 Secondary reference U.S. Government activity |
| 211329PC11 | 5/9 Secondary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 5310-00-290-3765 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 1680-00-871-8137, 6625-01-318-4651. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-00-290-3765: Distance From Centerline to Inside of Prebent Key: 0.340 INCHES NOMINAL IN; External Prebent Key Length: 0.120 INCHES NOMINAL IN; Overall Distance Including Keys: 0.800 INCHES NOMINAL 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.