The Washer,lock, cataloged under National Stock Number 5310-00-620-5418, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Allmetal Screw Products Corp. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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) |
| Manufacturers | Allmetal Screw Products Corp (CAGE 70318); All Manufacturers, Inc. Dba Allied Harbor Aerospace Fasteners (CAGE 57472) |
| Parameter | Value |
|---|---|
| NSN | 5310-00-620-5418 |
| Primary Part Number | G221439-14 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Allmetal Screw 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 |
|---|---|
| G221439-14 | Allmetal Screw Products Corp (USA) |
| G221439-14 | All Manufacturers, Inc. Dba Allied Harbor Aerospace Fasteners (USA) |
| Reference | Meaning |
|---|---|
| G221439-14 | 5/9 Secondary reference American Telephone and Telegraph Co |
| G221439-14 | 3/9 Design control — primary reference Mellowes Co Div of Charter Mfg Co Inc |
NSN 5310-00-620-5418 is a Washer,lock, manufactured by Allmetal Screw Products Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-620-5418 has 2 manufacturer part numbers on file: G221439-14 (Allmetal Screw Products Corp), G221439-14 (All Manufacturers, Inc. Dba Allied Harbor Aerospace Fasteners).
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.