The Washer,lock, cataloged under National Stock Number 5310-01-586-0273, 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10 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-586-0273 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-C-13924 CLASS 1 GRADE C MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Hardness Rating | 36.0 ROCKWELL C NOMINAL |
| Style Designator | FLAT EXTERNAL TEETH |
| Material Document and Classification | AMS 5085 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 4.219 INCHES NOMINAL IN |
| Material Thickness | 0.125 INCHES NOMINAL IN |
| Color | BLACK OVERALL |
| Surface Treatment | OXIDE OVERALL |
| Material | STEEL COMP 1050 OVERALL |
| Hole Diameter | 3.730 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 | X |
| Reference | Meaning |
|---|---|
| NAS1443-20 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-586-0273 is a Washer,lock, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-586-0273: Surface Treatment Document and Classification: MIL-C-13924 CLASS 1 GRADE C MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Hardness Rating: 36.0 ROCKWELL C NOMINAL; Style Designator: FLAT EXTERNAL TEETH; Material Document and Classification: AMS 5085 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 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.