The Nut,plain,round, cataloged under National Stock Number 5310-01-125-6850, 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 17 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 | 5310-01-125-6850 |
| Primary Part Number | 65130-07319-101 |
| 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 | SS8555,FSCM 78286 MFR REF SINGLE TREATMENT RESPONSE OVERALL EXCEPT THREADS |
| Thread Series | UNIFIED NATIONAL JOINT (UNJ) |
| Material Document and Classification | MIL-T-9047 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nut Counterbore Depth | 0.070 INCHES NOMINAL FIRST END IN |
| Drive Point Width | 0.250 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 2.125 INCHES IN |
| Nut Diameter | 2.690 INCHES NOMINAL IN |
| Counterbore Diameter | 2.296 INCHES NOMINAL FIRST END IN |
| Drive Point Depth | 0.185 INCHES NOMINAL IN |
| Nut Thickness | 0.440 INCHES NOMINAL IN |
| Surface Treatment | PAINT OVERALL EXCEPT THREADS |
| Drive Point Quantity | 8 |
| Nut Style | ROUND |
| Thread Class | 3B |
| Thread Quantity Per Inch | 16 |
| Material | TITANIUM ALLOY OVERALL |
| 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 |
|---|---|
| 65130-07319-101 | Mcmellon Bros., Incorporated Dba Mc Mellon Brothers Inc (USA) |
| 65130-07319-101 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| 65130-07319-101 | J a Machine & Tool Co Inc (USA) |
NSN 5310-01-125-6850 is a Nut,plain,round, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-125-6850 has 3 manufacturer part numbers on file: 65130-07319-101 (Mcmellon Bros., Incorporated Dba Mc Mellon Brothers Inc), 65130-07319-101 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), 65130-07319-101 (J a Machine & Tool Co Inc).
Key specifications for 65130-07319-101: Surface Treatment Document and Classification: SS8555,FSCM 78286 MFR REF SINGLE TREATMENT RESPONSE OVERALL EXCEPT THREADS; Thread Series: UNIFIED NATIONAL JOINT (UNJ); Material Document and Classification: MIL-T-9047 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Nut Counterbore Depth: 0.070 INCHES NOMINAL FIRST END IN. 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.