The Washer,shouldered and Recessed, cataloged under National Stock Number 5310-01-531-3669, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is United Technologies Corp Hamilton Sundstrand Corp. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Item Name | Washer,shouldered and Recessed |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | United Technologies Corp Hamilton Sundstrand Corp (CAGE 07148) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-531-3669 |
| Primary Part Number | 28507-4 |
| Item Name | Washer,shouldered and Recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | United Technologies Corp Hamilton Sundstrand Corp |
| 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 |
|---|---|
| 28507-4 PRIMARY | United Technologies Corp Hamilton Sundstrand Corp (USA) |
NSN 5310-01-531-3669 is a Washer,shouldered and Recessed, manufactured by United Technologies Corp Hamilton Sundstrand Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-531-3669 has 1 manufacturer part number on file: 28507-4 (United Technologies Corp Hamilton Sundstrand Corp).
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.