The Washer,lock, cataloged under National Stock Number 5310-01-421-4990, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Airpak Products Corporation Dba Airpak Products Corp. The record lists 2 manufacturer part numbers 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 | Airpak Products Corporation Dba Airpak Products Corp (CAGE 53266) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-421-4990 |
| Primary Part Number | AMPS5640-5 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Airpak Products Corporation Dba Airpak Products Corp |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| AM58000-101A FIND NO 38 | Airpak Products Corporation Dba Airpak Products Corp (USA) |
| AMPS5640-5 PRIMARY | Airpak Products Corporation Dba Airpak Products Corp (USA) |
NSN 5310-01-421-4990 is a Washer,lock, manufactured by Airpak Products Corporation Dba Airpak Products Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-421-4990 has 2 manufacturer part numbers on file: AM58000-101A FIND NO 38 (Airpak Products Corporation Dba Airpak Products Corp), AMPS5640-5 (Airpak Products Corporation Dba Airpak Products Corp).
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.