The Washer,key, cataloged under National Stock Number 5310-00-753-3992, 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10 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-753-3992 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES ALL SURFACES |
| Internal Straight Key Width | 0.056 INCHES MINIMUM AND 0.058 INCHES MAXIMUM IN |
| Distance From Centerline to Top of Internal Key | 0.036 INCHES NOMINAL IN |
| Style Designator | KEY |
| Material Document and Classification | QQ-S-766,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.448 INCHES MINIMUM AND 0.458 INCHES MAXIMUM IN |
| Material Thickness | 0.029 INCHES MINIMUM AND 0.033 INCHES MAXIMUM IN |
| Material | STEEL COMP 302 OVERALL |
| Internal Key Quantity | 1 |
| Hole Diameter | 0.188 INCHES MINIMUM AND 0.189 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 |
|---|---|
| SMB410067 | 5/2 Secondary reference U.S. Government activity |
| 2580-366 | 5/9 Secondary reference U.S. Government activity |
| 2580-366 | 3/9 Design control — primary reference Recon/optical, Inc. |
NSN 5310-00-753-3992 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-753-3992: Surface Finish: 63.0 MICROINCHES ALL SURFACES; Internal Straight Key Width: 0.056 INCHES MINIMUM AND 0.058 INCHES MAXIMUM IN; Distance From Centerline to Top of Internal Key: 0.036 INCHES NOMINAL IN; Style Designator: KEY. 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.