The Nut,plain,round, cataloged under National Stock Number 5310-00-394-6282, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 13 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-394-6282 |
| Primary Part Number | 166386-16 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions |
| Status | ACTIVE |
| Thread Series | UNS |
| Nut Counterbore Depth | 3.062 INCHES NOMINAL NUT IN |
| Drive Point Width | 0.500 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 2.250 INCHES IN |
| Nut Diameter | 4.500 INCHES NOMINAL IN |
| Counterbore Diameter | 2.750 INCHES NOMINAL NUT IN |
| Drive Point Depth | 0.312 INCHES NOMINAL IN |
| Undercut Thickness | 4.312 INCHES NOMINAL IN |
| Nut Thickness | 4.812 INCHES NOMINAL IN |
| Small End Diameter | 3.500 INCHES NOMINAL IN |
| Drive Point Quantity | 8 |
| Nut Style | ROUND |
| Thread Class | 3 |
| Thread Quantity Per Inch | 12 |
| Material | STEEL 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 |
|---|---|
| 166386-16 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 187953PC16 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 186789PC16 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| 187737PC16 | Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions (USA) |
| Reference | Meaning |
|---|---|
| 186789PC16 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 186789PC16 | 5/9 Secondary reference Ingersoll Rand Co |
| 187737PC16 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 166386-16 | 5/9 Secondary reference U.S. Government activity |
| 166386-16 | 5/9 Secondary reference Ingersoll Rand Co |
| 187737PC16 | 5/9 Secondary reference U.S. Government activity |
| 187953PC16 | 5/9 Secondary reference Ingersoll Rand Co |
| 187953PC16 | 5/9 Secondary reference U.S. Government activity |
| 186789PC16 | 5/9 Secondary reference U.S. Government activity |
| 166386-16 | 3/9 Design control — primary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 187737PC16 | 5/9 Secondary reference Ingersoll Rand Co |
| 187953PC16 | 5/9 Secondary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 166386-16 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5310-00-394-6282 is a Nut,plain,round, manufactured by Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-394-6282 has 4 manufacturer part numbers on file: 166386-16 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions), 187953PC16 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions), 186789PC16 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions), 187737PC16 (Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions).
Key specifications for 166386-16: Thread Series: UNS; Nut Counterbore Depth: 3.062 INCHES NOMINAL NUT IN; Drive Point Width: 0.500 INCHES NOMINAL 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.