The Washer,key, cataloged under National Stock Number 5310-00-927-9640, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-00-927-9640 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES BOTTOM |
| Surface Finish | 32.0 MICROINCHES TOP |
| Internal Straight Key Width | 0.0224 INCHES MINIMUM AND 0.0266 INCHES MAXIMUM IN |
| Distance From Centerline to Top of Internal Key | 0.0105 INCHES MINIMUM AND 0.0145 INCHES MAXIMUM IN |
| Heat Treatment | COLD DRAWN FULL HARD CONDITION |
| Style Designator | KEY |
| Material Document and Classification | QQ-S-764 CL 416 COND H FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.410 INCHES MINIMUM AND 0.430 INCHES MAXIMUM IN |
| Material Thickness | 0.015 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL CORROSION RESISTING OVERALL |
| Internal Key Quantity | 14 |
| Hole Diameter | 0.1695 INCHES MINIMUM AND 0.1715 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 |
|---|---|
| 1828131 | 3/9 Design control — primary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 5310-00-927-9640 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-927-9640: Surface Finish: 32.0 MICROINCHES BOTTOM; Surface Finish: 32.0 MICROINCHES TOP; Internal Straight Key Width: 0.0224 INCHES MINIMUM AND 0.0266 INCHES MAXIMUM IN; Distance From Centerline to Top of Internal Key: 0.0105 INCHES MINIMUM AND 0.0145 INCHES MAXIMUM IN. 13 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.