The Nut,self-Locking,clinch, cataloged under National Stock Number 5310-01-078-2740, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Esna, Llc. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-078-2740 |
| Primary Part Number | 12LHCFM1-6Z |
| Item Name | Nut,self-Locking,clinch |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Esna, Llc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TYPE II,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNJC |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.138 INCHES IN |
| Nut Diameter | 0.224 INCHES MINIMUM AND 0.244 INCHES MAXIMUM IN |
| Pilot Diameter | 0.190 INCHES MINIMUM AND 0.194 INCHES MAXIMUM IN |
| Pilot Length | 0.037 INCHES MINIMUM AND 0.043 INCHES MAXIMUM IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Height | 0.130 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| Nut Style | CLINCH |
| Thread Class | 2B |
| Thread Quantity Per Inch | 32 |
| Material | IRON ALLOY 660 OVERALL |
| 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 |
|---|---|
| 12LHCFM1-6Z PRIMARY | Esna, Llc (USA) |
| 122903-03 | Ge Aviation Systems Llc (USA) |
| Reference | Meaning |
|---|---|
| 12LHCFM1-6Z | 5/9 Secondary reference Harvard Industries Inc |
NSN 5310-01-078-2740 is a Nut,self-Locking,clinch, manufactured by Esna, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-078-2740 has 2 manufacturer part numbers on file: 12LHCFM1-6Z (Esna, Llc), 122903-03 (Ge Aviation Systems Llc).
Key specifications for 12LHCFM1-6Z: Surface Treatment Document and Classification: QQ-P-416,TYPE II,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNJC; Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.138 INCHES IN. 14 specifications are documented in the U.S. Government catalog.
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.