The Washer,lock, cataloged under National Stock Number 5310-01-561-9849, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Washer,lock |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-561-9849 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| 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 |
|---|---|
| 13221E9122 | 5/9 Secondary reference Drs Environmental Systems Inc |
| 500K1950-1 | 3/2 Design control — primary reference U.S. Government activity |
| 13221E9122 | 5/2 Secondary reference U.S. Government activity |
| 500K1950-1 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-01-561-9849 is a Washer,lock, classified under FSC 5310, Nuts and Washers. Status: active.
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.