The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-550-5671, 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 4 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-550-5671 |
| Primary Part Number | 807028-34 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Div Epd |
| Status | ACTIVE |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Nominal Thread Size | 1.125 INCHES IN |
| Thread Class | 3B |
| Thread Quantity Per Inch | 7 |
| 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 |
|---|---|
| RY-166400 ITEM 4.3 | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| RW-166262 ITEM 4.3 | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| 807028-34 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Epd (USA) |
| Reference | Meaning |
|---|---|
| 807028-34 | 3/9 Design control — primary reference U.S. Government activity |
| RW-166262 ITEM 4.3 | 5/9 Secondary reference U.S. Government activity |
| RY-166400 ITEM 4.3 | 5/9 Secondary reference U.S. Government activity |
| 807028-34 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-550-5671 is a Nut,plain,hexagon, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Epd, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-550-5671 has 3 manufacturer part numbers on file: RY-166400 ITEM 4.3 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), RW-166262 ITEM 4.3 (Curtiss-Wright Electro-Mechanical Corporation Div Epd), 807028-34 (Curtiss-Wright Electro-Mechanical Corporation Div Epd).
Key specifications for 807028-34: Thread Series: UNIFIED NATIONAL COARSE (UNC); Nominal Thread Size: 1.125 INCHES IN; Part Name Assigned by Controlling Agency: HEAVY HEX NUT; Thread Class: 3B. 4 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.