The Nut,self-Locking,round, cataloged under National Stock Number 5310-01-032-3161, 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 Div Epd. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-032-3161 |
| Primary Part Number | RY156787PC23 |
| Item Name | Nut,self-Locking,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| Status | ACTIVE |
| Flange Thickness | 0.188 INCHES NOMINAL IN |
| Thread Series | UNEF |
| Drive Point Width | 0.250 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.562 INCHES IN |
| Nut Diameter | 2.240 INCHES NOMINAL IN |
| Drive Point Depth | 0.078 INCHES NOMINAL IN |
| Undercut Thickness | 0.125 INCHES NOMINAL IN |
| Locking Feature | PREVAILING TORQUE WITH METALLIC INSERT |
| Nut Thickness | 0.500 INCHES NOMINAL IN |
| Small End Diameter | 1.930 INCHES NOMINAL IN |
| Drive Point Quantity | 4 |
| Nut Style | ROUND |
| Thread Class | 3B |
| Thread Quantity Per Inch | 18 |
| 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 |
|---|---|
| 025797-00 | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| RY156787PC23 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| Reference | Meaning |
|---|---|
| BL-N-08 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 25797PH | 5/9 Secondary reference Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| RY156787PC23 | 3/9 Design control — primary reference U.S. Government activity |
| NAVSHIP316-0253 | C/1 Advisory reference — outside the item-of-supply concept Kornylak Corp |
| WX-124PCM | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 25797PH | 5/9 Secondary reference U.S. Government activity |
| BLN08 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-032-3161 is a Nut,self-Locking,round, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-032-3161 has 2 manufacturer part numbers on file: 025797-00 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), RY156787PC23 (Curtiss-Wright Electro-Mechanical Corporation Div Epd).
Key specifications for RY156787PC23: Flange Thickness: 0.188 INCHES NOMINAL IN; Thread Series: UNEF; Drive Point Width: 0.250 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.