The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-646-6530, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Naval Sea Systems Command (CAGE 53711) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-646-6530 |
| Primary Part Number | 588-7666730 ITEM 13 |
| Item Name | Nut,self-Locking,hexagon |
| 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) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 588-7666730 ITEM 13 PRIMARY | Naval Sea Systems Command (USA) |
| 782-7667089 ITEM 34 | Naval Sea Systems Command (USA) |
| 782-8326739 ITEM 34 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 782-8326739 | D/9 Drawing number reference only Naval Sea Systems Command |
| 588-7666730 | D/9 Drawing number reference only Naval Sea Systems Command |
| 782-7667089 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 5310-01-646-6530 is a Nut,self-Locking,hexagon, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-646-6530 has 3 manufacturer part numbers on file: 588-7666730 ITEM 13 (Naval Sea Systems Command), 782-7667089 ITEM 34 (Naval Sea Systems Command), 782-8326739 ITEM 34 (Naval Sea Systems Command).
4 possible matches (shared part number, not a government interchangeability claim): 5310-01-646-9307, 3990-01-648-1274, 5340-01-648-2410. Verify interchangeability with system specifications before substitution.
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.