The Washer,lock, cataloged under National Stock Number 5310-01-502-2940, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Crysteel Manufacturing, Inc Dba Crysteel Manufacturing Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Item Name | Washer,lock |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Crysteel Manufacturing, Inc Dba Crysteel Manufacturing Inc (CAGE 5X050) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-502-2940 |
| Primary Part Number | 404931 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Crysteel Manufacturing, Inc Dba Crysteel Manufacturing Inc |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 404931 PRIMARY | Crysteel Manufacturing, Inc Dba Crysteel Manufacturing Inc (USA) |
NSN 5310-01-502-2940 is a Washer,lock, manufactured by Crysteel Manufacturing, Inc Dba Crysteel Manufacturing Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-502-2940 has 1 manufacturer part number on file: 404931 (Crysteel Manufacturing, Inc Dba Crysteel Manufacturing Inc).
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.