The Washer,convex, cataloged under National Stock Number 5310-01-533-7214, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. The record lists 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-533-7214 |
| Primary Part Number | 4M404-3 |
| Item Name | Washer,convex |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 4M404-3 PRIMARY | The Boeing Company Div Defense (USA) |
| 4M404-3 PRIMARY | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| 4M404-3 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| 4M404-3 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 4M404-3 PRIMARY | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| 4M404-3 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-533-7214 is a Washer,convex, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-533-7214 has 5 manufacturer part numbers on file: 4M404-3 (The Boeing Company Div Defense), 4M404-3 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), 4M404-3 (Howmet Global Fastening Systems Inc), 4M404-3 (Sps Technologies, Llc Dba PB Fasteners), 4M404-3 (Huck International, Inc).
Key specifications for 4M404-3: Special Features: ITEM PREVIOUSLY KNOWN AS WASHER, CONVEX, AIRCRAFT; End Item Identification: FRAME, AIRCRAFT F/A18 E-F. 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.
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.