The Nut,self-Locking,round, cataloged under National Stock Number 5310-01-164-4492, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Whittet-Higgins Company. Government technical data includes 16 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-164-4492 |
| Primary Part Number | BH-11 |
| Item Name | Nut,self-Locking,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Whittet-Higgins Company |
| Status | ACTIVE |
| Thread Series | UNS |
| Thread Pitch Diameters | +2.1209 TO 2.1260 INCHES IN |
| Drive Point Width | 0.230 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 2.157 INCHES IN |
| Nut Diameter | 2.954 INCHES MINIMUM AND 2.969 INCHES MAXIMUM IN |
| Drive Point Depth | 0.125 INCHES NOMINAL IN |
| Undercut Thickness | 0.141 INCHES NOMINAL IN |
| Locking Feature | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| Nut Thickness | 0.546 INCHES MINIMUM AND 0.578 INCHES MAXIMUM IN |
| Small End Diameter | 2.531 INCHES NOMINAL IN |
| Drive Point Quantity | 4 |
| Nut Style | ROUND |
| Thread Quantity Per Inch | 18 |
| Material | STEEL NUT |
| Material | FIBERBOARD LOCKING INSERT |
| 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 |
|---|---|
| BH-11 PRIMARY | Whittet-Higgins Company (USA) |
| K59-0044 | Ward Leonard Ct Llc (USA) |
| 01-0296 ITEM NO 26 | Ward Leonard Ct Llc (USA) |
| Reference | Meaning |
|---|---|
| 01-0296 ITEM NO 26 | 5/9 Secondary reference Ward Leonard Ct Llc |
| K59-0044 | C/1 Advisory reference — outside the item-of-supply concept Ward Leonard Ct Llc |
| U8266-2 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-164-4492 is a Nut,self-Locking,round, manufactured by Whittet-Higgins Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-164-4492 has 3 manufacturer part numbers on file: BH-11 (Whittet-Higgins Company), K59-0044 (Ward Leonard Ct Llc), 01-0296 ITEM NO 26 (Ward Leonard Ct Llc).
Key specifications for BH-11: Thread Series: UNS; Thread Pitch Diameters: +2.1209 TO 2.1260 INCHES IN; Drive Point Width: 0.230 INCHES MINIMUM AND 0.260 INCHES MAXIMUM 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.