The Nut,self-Locking,clinch, cataloged under National Stock Number 5310-00-637-3232, 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 20 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-637-3232 |
| Primary Part Number | 79NC-02 |
| Item Name | Nut,self-Locking,clinch |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Esna, Llc |
| Status | ACTIVE |
| Lubrication | SOLUBLE LUBRICANT |
| Width Across Flats | 0.375 INCHES NOMINAL IN |
| Thread Series | UNF |
| Temp Rating | 250.0 FAHRENHEIT NOMINAL DEGF |
| Material Document and Classification | MIL-M-20693 MIL SPEC ALL MATERIAL RESPONSES LOCKING INSERT |
| Material Document and Classification | AMS 5640 ASSN STD SINGLE MATERIAL RESPONSE NUT |
| Nut Counterbore Depth | 0.080 INCHES NOMINAL NUT IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| Counterbore Diameter | 0.220 INCHES NOMINAL NUT IN |
| Pilot Diameter | 0.275 INCHES NOMINAL IN |
| Pilot Length | 0.085 INCHES NOMINAL IN |
| Locking Feature | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| Nut Height | 0.335 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL EXCEPT INSERT |
| Nut Style | CLINCH |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| Material | PLASTIC POLYHEXAMETHYLENE AMIDE OR PLASTIC POLYCAPROLACTAM LOCKING INSERT |
| Material | STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 303 PLUS X NUT |
| 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 |
|---|---|
| 327604-3 | Raytheon Company (USA) |
| 327604-3 | Raytheon Company Dba Raytheon Co (USA) |
| 79NC-02 PRIMARY | Esna, Llc (USA) |
| Reference | Meaning |
|---|---|
| 9175032 | 5/9 Secondary reference Us Army Aviation and Missile Command |
| 79NC2-02 | 5/2 Secondary reference U.S. Government activity |
| 327604-3 | 5/9 Secondary reference Raytheon Company Div Corp |
| 79NC2-02 | 5/9 Secondary reference Harvard Industries Inc |
NSN 5310-00-637-3232 is a Nut,self-Locking,clinch, manufactured by Esna, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-637-3232 has 3 manufacturer part numbers on file: 327604-3 (Raytheon Company), 327604-3 (Raytheon Company Dba Raytheon Co), 79NC-02 (Esna, Llc).
Key specifications for 79NC-02: Lubrication: SOLUBLE LUBRICANT; Width Across Flats: 0.375 INCHES NOMINAL IN; Thread Series: UNF; Temp Rating: 250.0 FAHRENHEIT NOMINAL DEGF. 20 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.