The Washer,keyway, cataloged under National Stock Number 5310-00-449-6470, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is General Motors Corp. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-449-6470 |
| Primary Part Number | 590498 |
| Item Name | Washer,keyway |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | General Motors Corp |
| Status | ACTIVE |
| Distance From Centerline to Bottom of Internal Keyway | 1.000 INCHES NOMINAL IN |
| Internal Keyway Width | 0.188 INCHES NOMINAL IN |
| Hardness Rating | 79.0 ROCKWELL A NOMINAL |
| Material Document and Classification | AISI C1008 ASSN STD 1ST MATERIAL RESPONSE OR AISI C1010 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Outside Diameter | 2.688 INCHES NOMINAL IN |
| Features Provided | CASEHARDENED |
| Material Thickness | 0.125 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Hole Diameter | 1.750 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 |
| Part Number | Manufacturer |
|---|---|
| 590498 PRIMARY | General Motors Corp (USA) |
NSN 5310-00-449-6470 is a Washer,keyway, manufactured by General Motors Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-449-6470 has 1 manufacturer part number on file: 590498 (General Motors Corp).
Key specifications for 590498: Distance From Centerline to Bottom of Internal Keyway: 1.000 INCHES NOMINAL IN; Internal Keyway Width: 0.188 INCHES NOMINAL IN; Hardness Rating: 79.0 ROCKWELL A NOMINAL; Material Document and Classification: AISI C1008 ASSN STD 1ST MATERIAL RESPONSE OR AISI C1010 ASSN STD 2ND MATERIAL RESPONSE OVERALL. 9 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.