The Washer,key, cataloged under National Stock Number 5310-00-674-5745, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-00-674-5745 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Internal Straight Key Width | 0.155 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN |
| Distance From Centerline to Top of Internal Key | 0.507 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | AMS2485 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Style Designator | KEY |
| Material Document and Classification | AMS5040 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.481 INCHES MINIMUM AND 1.486 INCHES MAXIMUM IN |
| Material Thickness | 0.038 INCHES MINIMUM AND 0.046 INCHES MAXIMUM IN |
| Color | BLACK OVERALL |
| Surface Treatment | OXIDE FILM OVERALL |
| Material | STEEL COMP 1010 OVERALL |
| Internal Key Quantity | 2 |
| Hole Diameter | 1.185 INCHES MINIMUM AND 1.200 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 |
|---|---|
| 327B477P3 | 5/9 Secondary reference General Electric Company Dba Ge Structured Services Div General Electric Structured Services, Lp |
| 327B477P3 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-674-5745 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-674-5745: Internal Straight Key Width: 0.155 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN; Distance From Centerline to Top of Internal Key: 0.507 INCHES NOMINAL IN; Surface Treatment Document and Classification: AMS2485 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Style Designator: KEY. 12 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.