The Washer,concave, cataloged under National Stock Number 5310-01-204-3239, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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,concave |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Naval Sea Systems Command (CAGE 53711); Gkn Aerospace Services Ltd (CAGE K1294) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-204-3239 |
| Primary Part Number | 5750388-003 |
| Item Name | Washer,concave |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Sea Systems Command |
| 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 |
|---|---|
| 5750388-003 PRIMARY | Naval Sea Systems Command (USA) |
| 119-5749340 FIND 33 | Naval Sea Systems Command (USA) |
| SGS1183 | Gkn Aerospace Services Ltd (GBR) |
| Reference | Meaning |
|---|---|
| 5750388-003 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 5750388-033 | 5/9 Secondary reference Naval Sea Systems Command |
NSN 5310-01-204-3239 is a Washer,concave, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-204-3239 has 3 manufacturer part numbers on file: 5750388-003 (Naval Sea Systems Command), 119-5749340 FIND 33 (Naval Sea Systems Command), SGS1183 (Gkn Aerospace Services Ltd).
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.