The Nut,adjusting Lock, cataloged under National Stock Number 5310-00-591-9990, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Westinghouse Electric Corp. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Nut,adjusting Lock |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Westinghouse Electric Corp (CAGE 79500) |
| Parameter | Value |
|---|---|
| NSN | 5310-00-591-9990 |
| Primary Part Number | 2JB1112-1 |
| Item Name | Nut,adjusting Lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Westinghouse Electric Corp |
| 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 |
|---|---|
| 666J925PC50 | Westinghouse Electric Corp (USA) |
| 2JB1112-1 PRIMARY | Westinghouse Electric Corp (USA) |
| 2JB1112PC1 | Westinghouse Electric Corp (USA) |
| 1JH2184PC47 | Westinghouse Electric Corp (USA) |
| 663J869PC29 | Westinghouse Electric Corp (USA) |
| 905J537PC19 | Westinghouse Electric Corp (USA) |
| Reference | Meaning |
|---|---|
| 906J404PC40 | 5/9 Secondary reference Westinghouse Electric Corp |
| 905J960PC40 | 5/9 Secondary reference Westinghouse Electric Corp |
| 905J960PC40 | 5/2 Secondary reference U.S. Government activity |
| 906J404PC40 | 5/2 Secondary reference U.S. Government activity |
| 2JB1112-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-591-9990 is a Nut,adjusting Lock, manufactured by Westinghouse Electric Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-591-9990 has 6 manufacturer part numbers on file: 666J925PC50 (Westinghouse Electric Corp), 2JB1112-1 (Westinghouse Electric Corp), 2JB1112PC1 (Westinghouse Electric Corp), 1JH2184PC47 (Westinghouse Electric Corp), 663J869PC29 (Westinghouse Electric Corp) 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.