The Washer,concave, cataloged under National Stock Number 5310-01-204-3238, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Gkn Aerospace Services Ltd. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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); Aef-Performance Llc (CAGE 66618); Smr Acquisition Llc (CAGE 0ACH0); Textron Systems Corp (CAGE 50079); Us Wax & Polymer Inc Div Uswp Manufacturing (CAGE 6TNH2) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-204-3238 |
| Primary Part Number | SGS1165 |
| Item Name | Washer,concave |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Gkn Aerospace Services Ltd |
| 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 |
|---|---|
| 119-5749376 FIND 66 | Naval Sea Systems Command (USA) |
| SGS1165 | Aef-Performance Llc (USA) |
| SGS1165 | Smr Acquisition Llc (USA) |
| SGS1165 | Textron Systems Corp (USA) |
| SGS1165 | Us Wax & Polymer Inc Div Uswp Manufacturing (USA) |
| SGS1165 PRIMARY | Gkn Aerospace Services Ltd (GBR) |
| Reference | Meaning |
|---|---|
| SGS1165 | 5/9 Secondary reference O K Tool & Die Co Inc |
| 5750388-001 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 119-5749340 FIND 32 | 7/2 Vendor item drawing reference Naval Sea Systems Command |
NSN 5310-01-204-3238 is a Washer,concave, manufactured by Gkn Aerospace Services Ltd, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-204-3238 has 6 manufacturer part numbers on file: 119-5749376 FIND 66 (Naval Sea Systems Command), SGS1165 (Aef-Performance Llc), SGS1165 (Smr Acquisition Llc), SGS1165 (Textron Systems Corp), SGS1165 (Us Wax & Polymer Inc Div Uswp Manufacturing) and 1 more.
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.