The Nut,self-Locking,co, cataloged under National Stock Number 2840-00-686-5743, is classified within Federal Supply Class 2840 (Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Esna, Llc. The record lists 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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,co |
| FSC / FSG | 2840 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components (FSG 28) |
| Manufacturers | General Electric Company (CAGE 07482); Esna, Llc (CAGE 019L2) |
| Parameter | Value |
|---|---|
| NSN | 2840-00-686-5743 |
| Primary Part Number | LH3612-054 |
| Item Name | Nut,self-Locking,co |
| FSC / FSG | 2840 / 28 — Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components |
| Manufacturer | Esna, 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 |
|---|---|
| 578C196P2 | General Electric Company (USA) |
| LH3612-054 PRIMARY | Esna, Llc (USA) |
| Reference | Meaning |
|---|---|
| LH3612-054 | 5/9 Secondary reference Harvard Industries Inc |
NSN 2840-00-686-5743 is a Nut,self-Locking,co, manufactured by Esna, Llc, classified under FSC 2840, Gas Turbines and Jet Engines, Aircraft, Prime Moving; and Components. Status: active.
NSN 2840-00-686-5743 has 2 manufacturer part numbers on file: 578C196P2 (General Electric Company), LH3612-054 (Esna, Llc).
1 possible match (shared part number, not a government interchangeability claim): 2840-00-703-2200. 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.