The Washer,key, cataloged under National Stock Number 5310-01-358-7312, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-358-7312 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Internal Prebent Key Width | 0.240 INCHES NOMINAL IN |
| Overall Distance Including Keys | 5.790 INCHES NOMINAL IN |
| Style Designator | KEY |
| Material Document and Classification | QQ-S-763 FED SPEC ALL MATERIAL RESPONSES OR ASTM A167 ASSN STD ALL MATERIAL RESPONSES OR ASTM A240 ASSN STD ALL MATERIAL RESPONSES OR ASTM A666 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Outside Diameter | 5.450 INCHES NOMINAL IN |
| Material Thickness | 0.031 INCHES MINIMUM AND 0.039 INCHES MAXIMUM IN |
| External Straight Key Width | 0.312 INCHES NOMINAL IN |
| External Key Quantity | 14 |
| Internal Prebent Key Length | 0.110 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL COMP 302 OR STEEL COMP 304 OVERALL |
| Hole Diameter | 5.005 INCHES MINIMUM AND 5.015 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 |
|---|---|
| 2843269-101 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-358-7312 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-358-7312: Surface Treatment Document and Classification: MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Internal Prebent Key Width: 0.240 INCHES NOMINAL IN; Overall Distance Including Keys: 5.790 INCHES NOMINAL IN; Style Designator: KEY. 13 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.