The Nut,self-Locking,cap, cataloged under National Stock Number 5310-01-346-3788, 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 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-346-3788 |
| Primary Part Number | 79NKTM-62 |
| Item Name | Nut,self-Locking,cap |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Esna, Llc |
| Status | ACTIVE |
| Width Across Flats | 0.234 INCHES MINIMUM AND 0.264 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY1,CL3 MIL SPEC SINGLE TREATMENT RESPONSE NUT |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Material Document and Classification | MIL-M-20693 MIL SPEC ALL MATERIAL RESPONSES LOCKING INSERT |
| Material Document and Classification | MIL-M-20693 MIL SPEC ALL MATERIAL RESPONSES CAP |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.138 INCHES IN |
| Locking Feature | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| Nut Height | 0.302 INCHES MINIMUM AND 0.314 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM NUT |
| Nut Style | CAP |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| Material | STEEL CORROSION RESISTING NUT |
| Material | PLASTIC POLYHEXAMETHYLENE ADIPAMIDE OR PLASTIC POLYCAPROLACTAM CAP |
| Material | PLASTIC POLYHEXAMETHYLENE ADIPAMIDE OR PLASTIC POLYCAPROLACTAM LOCKING INSERT |
| 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 |
|---|---|
| 79NKTM-62 | Esna, Llc (USA) |
| Reference | Meaning |
|---|---|
| 79NKTM-62 | 3/9 Design control — primary reference Harvard Industries Inc |
NSN 5310-01-346-3788 is a Nut,self-Locking,cap, manufactured by Esna, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-346-3788 has 1 manufacturer part number on file: 79NKTM-62 (Esna, Llc).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-514-7431. Verify interchangeability with system specifications before substitution.
Key specifications for 79NKTM-62: Width Across Flats: 0.234 INCHES MINIMUM AND 0.264 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TY1,CL3 MIL SPEC SINGLE TREATMENT RESPONSE NUT; Thread Series: UNIFIED NATIONAL COARSE (UNC); Material Document and Classification: MIL-M-20693 MIL SPEC ALL MATERIAL RESPONSES LOCKING INSERT. 17 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.