The Washer,shouldered, cataloged under National Stock Number 5310-01-340-1176, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Rolls-Royce Controls and Data Services Limited. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Washer,shouldered |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Rolls-Royce Controls and Data Services Limited (CAGE U4271) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-340-1176 |
| Primary Part Number | 1785-4004 |
| Item Name | Washer,shouldered |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Rolls-Royce Controls and Data Services Limited |
| 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 |
|---|---|
| 1785-4004 | Rolls-Royce Controls and Data Services Limited (GBR) |
| Reference | Meaning |
|---|---|
| 1785-4004 | 3/2 Design control — primary reference U.S. Government activity |
| 1785-4004 | 5/9 Secondary reference Goodrich Control Systems Ltd T/a Goodrich Engine Control Systems |
NSN 5310-01-340-1176 is a Washer,shouldered, manufactured by Rolls-Royce Controls and Data Services Limited, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-340-1176 has 1 manufacturer part number on file: 1785-4004 (Rolls-Royce Controls and Data Services Limited).
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.