The Washer,key, cataloged under National Stock Number 5310-01-196-2749, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-196-2749 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Internal Straight Key Width | 0.065 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN |
| Distance From Centerline to Top of Internal Key | 0.492 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-C-13924 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Style Designator | KEY |
| Material Document and Classification | ASTM A568 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Outside Diameter | 1.390 INCHES MINIMUM AND 1.400 INCHES MAXIMUM IN |
| Material Thickness | 0.058 INCHES MINIMUM AND 0.068 INCHES MAXIMUM IN |
| Surface Treatment | OXIDE OVERALL |
| Material | STEEL COMP 1010 OR STEEL COMP 1012 OVERALL |
| Internal Key Quantity | 19 |
| Hole Diameter | 1.105 INCHES MINIMUM AND 1.115 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 |
|---|---|
| 953B279-1 | 5/9 Secondary reference U.S. Government activity |
| 953B279-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-196-2749 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-196-2749: Internal Straight Key Width: 0.065 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN; Distance From Centerline to Top of Internal Key: 0.492 INCHES MINIMUM AND 0.494 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-C-13924 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Style Designator: KEY. 11 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.