The Washer,shouldered, cataloged under National Stock Number 5310-00-239-0986, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Support Services Corp. The record lists 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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,shouldered |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Northrop Grumman Support Services Corp (CAGE 48306); American Beryllia Inc (CAGE 1U1C3) |
| Parameter | Value |
|---|---|
| NSN | 5310-00-239-0986 |
| Primary Part Number | 580R635H11 |
| Item Name | Washer,shouldered |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Northrop Grumman Support Services 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 |
|---|---|
| 580R635H11 | Northrop Grumman Support Services Corp (USA) |
| CG3408-0 | American Beryllia Inc (USA) |
| Reference | Meaning |
|---|---|
| CG3408-0 | 3/9 Design control — primary reference General Ceramics Inc National Beryllia Div |
| 580R635H11 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-00-239-0986 is a Washer,shouldered, manufactured by Northrop Grumman Support Services Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-239-0986 has 2 manufacturer part numbers on file: 580R635H11 (Northrop Grumman Support Services Corp), CG3408-0 (American Beryllia Inc).
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.