The Washer,key, cataloged under National Stock Number 5310-00-674-7642, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-674-7642 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Internal Straight Key Width | 0.280 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN |
| Distance From Centerline to Top of Internal Key | 1.480 INCHES MINIMUM AND 1.495 INCHES MAXIMUM IN |
| Style Designator | KEY |
| Outside Diameter | 3.370 INCHES MINIMUM AND 3.380 INCHES MAXIMUM IN |
| Material Thickness | 0.032 INCHES NOMINAL IN |
| Color | BLACK OVERALL |
| Surface Treatment | OXIDE FILM OVERALL |
| Material | STEEL OVERALL |
| Internal Key Quantity | 2 |
| Hole Diameter | 3.153 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 | F |
| Reference | Meaning |
|---|---|
| 327B589P1 | 5/9 Secondary reference General Electric Company |
| 327B589P1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-674-7642 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-674-7642: Internal Straight Key Width: 0.280 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN; Distance From Centerline to Top of Internal Key: 1.480 INCHES MINIMUM AND 1.495 INCHES MAXIMUM IN; Style Designator: KEY; Outside Diameter: 3.370 INCHES MINIMUM AND 3.380 INCHES MAXIMUM IN. 10 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.