The Nut,plain,castellated,hexagon, cataloged under National Stock Number 5310-00-423-7291, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Agco Corp Parts Opn. Government technical data includes 11 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-423-7291 |
| Primary Part Number | 4304218-3 |
| Item Name | Nut,plain,castellated,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Agco Corp Parts Opn |
| Status | ACTIVE |
| Width Across Flats | 0.750 INCHES NOMINAL IN |
| Thread Series | UNF |
| Material Document and Classification | SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Features Provided | CASEHARDENED |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.500 INCHES IN |
| Nut Height | 0.688 INCHES NOMINAL IN |
| Nut Style | CASTELLATED, HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 1120 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 |
|---|---|
| DE4218 | Agco Corp Parts Opn (USA) |
| 4304218 | Agco Corp Parts Opn (USA) |
| 4304218-3 PRIMARY | Agco Corp Parts Opn (USA) |
| Reference | Meaning |
|---|---|
| 1905-2059 | 5/9 Secondary reference U.S. Government activity |
| 01905-2059 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5310-00-423-7291 is a Nut,plain,castellated,hexagon, manufactured by Agco Corp Parts Opn, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-423-7291 has 3 manufacturer part numbers on file: DE4218 (Agco Corp Parts Opn), 4304218 (Agco Corp Parts Opn), 4304218-3 (Agco Corp Parts Opn).
Key specifications for 4304218-3: Width Across Flats: 0.750 INCHES NOMINAL IN; Thread Series: UNF; Material Document and Classification: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Features Provided: CASEHARDENED. 11 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.