The Washer,flat, cataloged under National Stock Number 5310-01-626-9495, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. The record lists 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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,flat |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Northrop Grumman Systems Corporation (CAGE 26512); Sps Technologies, Llc Dba PB Fasteners (CAGE 56878); Anillo Industries Llc (CAGE 10630) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-626-9495 |
| Primary Part Number | GW502CY4C |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Northrop Grumman Systems Corporation |
| 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 |
|---|---|
| GW502CY4C PRIMARY | Northrop Grumman Systems Corporation (USA) |
| 66854C-4 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| AS80-4C PRIMARY | Anillo Industries Llc (USA) |
| Reference | Meaning |
|---|---|
| VN941-4C | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-626-9495 is a Washer,flat, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-626-9495 has 3 manufacturer part numbers on file: GW502CY4C (Northrop Grumman Systems Corporation), 66854C-4 (Sps Technologies, Llc Dba PB Fasteners), AS80-4C (Anillo Industries Llc).
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.