The Nut,plain,cone Seat,hexagon, cataloged under National Stock Number 5310-01-108-0066, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 16 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-108-0066 |
| Primary Part Number | 65101-11502-101 |
| Item Name | Nut,plain,cone Seat,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Width Across Flats | 1.667 INCHES MINIMUM AND 1.690 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-L-19538 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT BEARING SURFACE |
| Thread Series | UNJS |
| Hardness Rating | 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM |
| Hole Configuration Style | CONFIGURATION B |
| Thread Pitch Diameters | +1.1018 TO 1.1061 INCHES IN |
| Material Document and Classification | MIL-S-5000,COND C MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | LEFT-HAND |
| Nominal Thread Size | 1.125 INCHES IN |
| Nut Height | 1.300 INCHES NOMINAL IN |
| Drilled Hole Diameter | 0.070 INCHES NOMINAL IN |
| Surface Treatment | LACQUER ACRYLIC OVERALL EXCEPT BEARING SURFACE |
| Nut Style | CONE SEAT, HEXAGON |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 4340 OVERALL |
| Hole Type and Quantity | 3 DRILLED |
| 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 |
|---|---|
| 65101-11502-101 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| 65101-11502-101 | B. & R. Machine & Tool Corp (USA) |
| 65101-11502-101 | Mcmellon Bros., Incorporated Dba Mc Mellon Brothers Inc (USA) |
NSN 5310-01-108-0066 is a Nut,plain,cone Seat,hexagon, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-108-0066 has 3 manufacturer part numbers on file: 65101-11502-101 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), 65101-11502-101 (B. & R. Machine & Tool Corp), 65101-11502-101 (Mcmellon Bros., Incorporated Dba Mc Mellon Brothers Inc).
Key specifications for 65101-11502-101: Width Across Flats: 1.667 INCHES MINIMUM AND 1.690 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-L-19538 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL EXCEPT BEARING SURFACE; Thread Series: UNJS; Hardness Rating: 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM. 16 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.