The Washer,flat, cataloged under National Stock Number 5310-01-202-3366, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Washer,flat |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Leonardo Spa Helicopters Division - Production Site (CAGE A0126); The Boeing Company (CAGE 77272) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-202-3366 |
| Primary Part Number | A02R4050-3 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company |
| 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 |
|---|---|
| A02R4050-3 | Leonardo Spa Helicopters Division - Production Site (ITA) |
| A02R4050-3 PRIMARY | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| A02R4050-3 | 5/9 Secondary reference Ridley Precision Tool Co Inc |
| A02R4050-3 | 5/9 Secondary reference Morris Mfg & Sls Corp |
| A02R4050-3 | 5/9 Secondary reference Creative Precision, Inc. |
NSN 5310-01-202-3366 is a Washer,flat, manufactured by The Boeing Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-202-3366 has 2 manufacturer part numbers on file: A02R4050-3 (Leonardo Spa Helicopters Division - Production Site), A02R4050-3 (The Boeing 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.