The Nut,plain,round, cataloged under National Stock Number 5310-01-146-8166, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-146-8166 |
| Primary Part Number | 65122-11270-102 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-S-365 FED SPEC SINGLE TREATMENT RESPONSE THREADS |
| Thread Series | UNIFIED NATIONAL JOINT (UNJ) |
| Precious Material | SILVER |
| Hardness Rating | 34.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | AMS6371 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 5.000 INCHES IN |
| Nut Diameter | 5.802 INCHES MINIMUM AND 5.812 INCHES MAXIMUM IN |
| Nut Thickness | 1.315 INCHES MINIMUM AND 1.325 INCHES MAXIMUM IN |
| Small End Diameter | 5.560 INCHES MINIMUM AND 5.563 INCHES MAXIMUM IN |
| Surface Treatment | SILVER THREADS |
| Drive Point Quantity | 16 |
| Nut Style | ROUND |
| Thread Class | 3B |
| Thread Quantity Per Inch | 12 |
| Material | STEEL COMP 4130 OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 65122-11270-102 | Airtronics, Llc (USA) |
| 65122-11270-102 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| 65122-11270-102 | Apex Manufacturing Company, Inc. Dba Apex Manufacturing Co (USA) |
| Reference | Meaning |
|---|---|
| 65122-11270-102 | 5/9 Secondary reference Tek Precision Co Limited |
| 65122-11270-101 | 5/9 Secondary reference Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
NSN 5310-01-146-8166 is a Nut,plain,round, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-146-8166 has 3 manufacturer part numbers on file: 65122-11270-102 (Airtronics, Llc), 65122-11270-102 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), 65122-11270-102 (Apex Manufacturing Company, Inc. Dba Apex Manufacturing Co).
Key specifications for 65122-11270-102: Surface Treatment Document and Classification: QQ-S-365 FED SPEC SINGLE TREATMENT RESPONSE THREADS; Thread Series: UNIFIED NATIONAL JOINT (UNJ); Precious Material: SILVER; 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.