The Washer,key, cataloged under National Stock Number 5310-00-918-4838, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Essex Engineering, Inc. Dba Essex Engineering & Manufacturing Co. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Item Name | Washer,key |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Essex Engineering, Inc. Dba Essex Engineering & Manufacturing Co (CAGE 02571); General Electric Company (CAGE 24446) |
| Parameter | Value |
|---|---|
| NSN | 5310-00-918-4838 |
| Primary Part Number | 4002T66P07 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Essex Engineering, Inc. Dba Essex Engineering & Manufacturing Co |
| 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 |
|---|---|
| 4002T66P07 | Essex Engineering, Inc. Dba Essex Engineering & Manufacturing Co (USA) |
| 4002T66P07 | General Electric Company (USA) |
| Reference | Meaning |
|---|---|
| 4002T66P07 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-918-4838 is a Washer,key, manufactured by Essex Engineering, Inc. Dba Essex Engineering & Manufacturing Co, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-918-4838 has 2 manufacturer part numbers on file: 4002T66P07 (Essex Engineering, Inc. Dba Essex Engineering & Manufacturing Co), 4002T66P07 (General Electric Company).
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.