The Washer,lock, cataloged under National Stock Number 5310-01-494-9451, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-494-9451 |
| Primary Part Number | 82129 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 82129 PRIMARY | Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc (USA) |
| 82129 | Riflecraft Limited (GBR) |
| Reference | Meaning |
|---|---|
| 5310PL1630566 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5310-01-494-9451 is a Washer,lock, manufactured by Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-494-9451 has 2 manufacturer part numbers on file: 82129 (Barrett Firearms Manufacturing, Inc. Dba Barrett Firearms Manufacturing Inc), 82129 (Riflecraft Limited).
Key specifications for 82129: Special Features: SCOPE RING WASHER; End Item Identification: BARRETT RIFLE, MODEL 82A1. 0 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.
NSN 5310-01-494-9451 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.