The Nut,self-Locking,castellated,hex, cataloged under National Stock Number 5310-01-431-9990, 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 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-431-9990 |
| Primary Part Number | 79NM107-62 |
| Item Name | Nut,self-Locking,castellated,hex |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Esna, Llc |
| Status | ACTIVE |
| Width Across Flats | 0.243 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE NUT |
| Thread Series | UNJC |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.138 INCHES IN |
| Locking Feature | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| Nut Height | 0.133 INCHES MINIMUM AND 0.153 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE NUT |
| Nut Style | CASTELLATED, HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| Material | PLASTIC POLYAMIDE NYLON LOCKING INSERT |
| Material | STEEL COMP 303 NUT |
| Bearing Surface Type | CHAMFERED OR 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 |
|---|---|
| 79NM107-62 PRIMARY | Esna, Llc (USA) |
| Reference | Meaning |
|---|---|
| 82982-01 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5310-01-431-9990 is a Nut,self-Locking,castellated,hex, manufactured by Esna, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-431-9990 has 1 manufacturer part number on file: 79NM107-62 (Esna, Llc).
Key specifications for 79NM107-62: Width Across Flats: 0.243 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE NUT; Thread Series: UNJC; Thread Direction: RIGHT-HAND. 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.