The Nut,self-Locking,spline, cataloged under National Stock Number 5310-01-101-3371, 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 15 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-101-3371 |
| Primary Part Number | 79NC5-62 |
| Item Name | Nut,self-Locking,spline |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Esna, Llc |
| Status | ACTIVE |
| Width Across Flats | 0.313 INCHES NOMINAL IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Nut Counterbore Depth | 0.165 INCHES NOMINAL NUT IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.138 INCHES IN |
| Counterbore Diameter | 0.165 INCHES NOMINAL NUT IN |
| Pilot Diameter | 0.220 INCHES MINIMUM AND 0.224 INCHES MAXIMUM IN |
| Pilot Length | 0.159 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN |
| Locking Feature | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| Nut Height | 0.347 INCHES MINIMUM AND 0.359 INCHES MAXIMUM IN |
| Nut Style | SPLINE |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| Material | PLASTIC POLYAMIDE NYLON LOCKING INSERT |
| Material | STEEL COMP 303 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 |
|---|---|
| 3313-0101 | Finnigan Corporation (USA) |
| 79NC5-62 PRIMARY | Esna, Llc (USA) |
| Reference | Meaning |
|---|---|
| 9174611 | 7/2 Vendor item drawing reference Us Army Aviation and Missile Command |
| 79NC5-62 | 5/9 Secondary reference Harvard Industries Inc |
| 3313-0101 | 5/9 Secondary reference Bae Systems Information & Electronic Systems Integration Inc. |
| 79315 | 5/9 Secondary reference Federal Screw Products, Inc. |
| 9174611-9 | 7/2 Vendor item drawing reference Us Army Aviation and Missile Command |
NSN 5310-01-101-3371 is a Nut,self-Locking,spline, manufactured by Esna, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-101-3371 has 2 manufacturer part numbers on file: 3313-0101 (Finnigan Corporation), 79NC5-62 (Esna, Llc).
1 possible match (shared part number, not a government interchangeability claim): 5342-01-139-5726. Verify interchangeability with system specifications before substitution.
Key specifications for 79NC5-62: Width Across Flats: 0.313 INCHES NOMINAL IN; Thread Series: UNIFIED NATIONAL COARSE (UNC); Nut Counterbore Depth: 0.165 INCHES NOMINAL NUT IN; Thread Direction: RIGHT-HAND. 15 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.