The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-280-6538, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Oshkosh Defense Llc. Government technical data includes 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-280-6538 |
| Primary Part Number | 2CX262 |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Oshkosh Defense Llc |
| Status | ACTIVE |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Nominal Thread Size | 0.312 INCHES IN |
| Thread Class | 2B |
| Thread Quantity Per Inch | 18 |
| 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 |
|---|---|
| 2CX262 PRIMARY | Oshkosh Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| 5340910 | C/1 Advisory reference — outside the item-of-supply concept J. W. Speaker Corporation Dba Jw Speaker Corp |
| 2CX262 | 5/9 Secondary reference Oshkosh Corp |
NSN 5310-01-280-6538 is a Nut,self-Locking,hexagon, manufactured by Oshkosh Defense Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-280-6538 has 1 manufacturer part number on file: 2CX262 (Oshkosh Defense Llc).
Key specifications for 2CX262: Thread Series: UNIFIED NATIONAL COARSE (UNC); Nominal Thread Size: 0.312 INCHES IN; Thread Class: 2B; End Item Identification: NSN 2320-01-304-2277 PLS (PALLETIZED LOADING SYSTEM); 2320-01-442-1940,TRUCK,CBT,(COMMAND BRIDGE TRANSPORTER); 3990-01-444-5196 CEMENT MIXER; MRAP - M-ATV UI. 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.