The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-00-084-6397, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-084-6397 |
| Primary Part Number | L79NM40 |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Esna, Llc |
| Status | ACTIVE |
| Width Across Flats | 0.252 INCHES NOMINAL IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Temp Rating | 250.0 FAHRENHEIT NOMINAL DEGF |
| Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.112 INCHES IN |
| Locking Feature | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| Nut Height | 0.156 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 40 |
| Material | STEEL COMP 303 OVERALL |
| Bearing Surface Type | WASHER FACED |
| 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 |
|---|---|
| 4912796-00 | Northrop Grumman Systems Corporation (USA) |
| L79NM40 PRIMARY | Esna, Llc (USA) |
| Reference | Meaning |
|---|---|
| L79NM40 | 5/9 Secondary reference Harvard Industries Inc |
| L79MN40 | 5/9 Secondary reference Harvard Industries Inc |
| 4912796-00 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-00-084-6397 is a Nut,self-Locking,hexagon, manufactured by Esna, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-084-6397 has 2 manufacturer part numbers on file: 4912796-00 (Northrop Grumman Systems Corporation), L79NM40 (Esna, Llc).
Key specifications for L79NM40: Width Across Flats: 0.252 INCHES NOMINAL IN; Thread Series: UNIFIED NATIONAL COARSE (UNC); Temp Rating: 250.0 FAHRENHEIT NOMINAL DEGF; Material Document and Classification: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 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.