The Nut,plain,round, cataloged under National Stock Number 5310-00-185-6540, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-185-6540 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Thread Series | UNS |
| Thread Pitch Diameters | +2.3239 TO 2.3290 INCHES IN |
| Drive Point Width | 0.250 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 2.360 INCHES IN |
| Nut Diameter | 3.1563 INCHES NOMINAL IN |
| Drive Point Depth | 0.125 INCHES NOMINAL IN |
| Nut Thickness | 0.531 INCHES NOMINAL IN |
| Surface Treatment | ZINC OVERALL |
| Drive Point Quantity | 4 |
| Nut Style | ROUND |
| 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 |
| Reference | Meaning |
|---|---|
| 12Z335-213 | 5/9 Secondary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| N12ZINCC0ATED | 5/1 Secondary reference Whittet-Higgins Company |
| 12Z10001-812 | 2/2 Government specification standardization U.S. Government activity |
NSN 5310-00-185-6540 is a Nut,plain,round, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-185-6540: Thread Series: UNS; Thread Pitch Diameters: +2.3239 TO 2.3290 INCHES IN; Drive Point Width: 0.250 INCHES NOMINAL IN; Thread Direction: RIGHT-HAND. 13 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.