The Washer,keyway, cataloged under National Stock Number 5310-00-489-7161, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-00-489-7161 |
| Item Name | Washer,keyway |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Distance From Centerline to Bottom of Internal Keyway | 2.211 INCHES MINIMUM AND 2.219 INCHES MAXIMUM IN |
| Internal Keyway Width | 0.375 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN |
| Heat Treatment | AS FABRICATED |
| Outside Diameter | 4.969 INCHES MINIMUM AND 5.031 INCHES MAXIMUM IN |
| Internal Keyway Quantity | 1 |
| Material Thickness | 0.188 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Hole Diameter | 3.922 INCHES MINIMUM AND 3.938 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 |
|---|---|
| 35960 | 3/9 Design control — primary reference Emerson Electric Co U S Electrical Motors Div |
NSN 5310-00-489-7161 is a Washer,keyway, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-489-7161: Distance From Centerline to Bottom of Internal Keyway: 2.211 INCHES MINIMUM AND 2.219 INCHES MAXIMUM IN; Internal Keyway Width: 0.375 INCHES MINIMUM AND 0.380 INCHES MAXIMUM IN; Heat Treatment: AS FABRICATED; Outside Diameter: 4.969 INCHES MINIMUM AND 5.031 INCHES MAXIMUM IN. 8 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.