The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-348-3343, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Long-Lok Llc. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | Long-Lok, Llc (CAGE 03038); Howmet Global Fastening Systems Inc (CAGE 15653); Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems (CAGE 1W025); Long-Lok Llc (CAGE 16941) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-348-3343 |
| Primary Part Number | T-1156-12C |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Long-Lok Llc |
| 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 |
|---|---|
| T-1156-12C | Long-Lok, Llc (USA) |
| H52826-12 | Howmet Global Fastening Systems Inc (USA) |
| 03A251-12C | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems (USA) |
| T-1156-12C PRIMARY | Long-Lok Llc (USA) |
| Reference | Meaning |
|---|---|
| AD03A251-12C | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-348-3343 is a Nut,self-Locking,hexagon, manufactured by Long-Lok Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-348-3343 has 4 manufacturer part numbers on file: T-1156-12C (Long-Lok, Llc), H52826-12 (Howmet Global Fastening Systems Inc), 03A251-12C (Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems), T-1156-12C (Long-Lok Llc).
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.