The Nut,plain,round, cataloged under National Stock Number 5310-01-266-5036, 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 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-266-5036 |
| Primary Part Number | 11631-01 |
| 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 | SF1003,CAGEC 93835 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNS |
| Nut Counterbore Depth | 0.030 INCHES MINIMUM AND 0.045 INCHES MAXIMUM FIRST END IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.125 INCHES IN |
| Nut Diameter | 0.218 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN |
| Counterbore Diameter | 0.126 INCHES MINIMUM AND 0.130 INCHES MAXIMUM FIRST END IN |
| Drive Point Depth | 0.040 INCHES MINIMUM IN |
| Nut Thickness | 0.187 INCHES NOMINAL IN |
| Drive Point Diameter | 0.018 INCHES MINIMUM AND 0.021 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Drive Point Quantity | 2 |
| Nut Style | ROUND |
| Thread Class | 3B |
| Thread Quantity Per Inch | 64 |
| Material | STEEL COMP 416 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 |
|---|---|
| 11631-01 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| Reference | Meaning |
|---|---|
| 11631-01 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-266-5036 is a Nut,plain,round, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-266-5036 has 1 manufacturer part number on file: 11631-01 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
Key specifications for 11631-01: Surface Treatment Document and Classification: SF1003,CAGEC 93835 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNS; Nut Counterbore Depth: 0.030 INCHES MINIMUM AND 0.045 INCHES MAXIMUM FIRST END IN; Thread Direction: RIGHT-HAND. 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.