The Nut,self-Locking,spline, cataloged under National Stock Number 5310-01-012-0099, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-012-0099 |
| Primary Part Number | 68NC6-62 |
| Item Name | Nut,self-Locking,spline |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Esna, Llc |
| Status | ACTIVE |
| Thread Series | UNJC |
| Material Document and Classification | T4 ASSN STD SINGLE MATERIAL RESPONSE OVERALL EXCEPT INSERT |
| Nut Counterbore Depth | 0.195 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 | 0.222 INCHES NOMINAL IN |
| Pilot Length | 0.195 INCHES NOMINAL IN |
| Locking Feature | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| Nut Height | 0.383 INCHES NOMINAL IN |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| Material | PLASTIC POLYAMIDE NYLON LOCKING INSERT |
| Material | ALUMINUM ALLOY 2017 OVERALL EXCEPT INSERT |
| 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 |
|---|---|
| 68NC6-62 PRIMARY | Esna, Llc (USA) |
| Reference | Meaning |
|---|---|
| 68NC6-62 | 5/9 Secondary reference Harvard Industries Inc |
NSN 5310-01-012-0099 is a Nut,self-Locking,spline, manufactured by Esna, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-012-0099 has 1 manufacturer part number on file: 68NC6-62 (Esna, Llc).
Key specifications for 68NC6-62: Thread Series: UNJC; Material Document and Classification: T4 ASSN STD SINGLE MATERIAL RESPONSE OVERALL EXCEPT INSERT; Nut Counterbore Depth: 0.195 INCHES NOMINAL NUT IN; 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.