The Nut,self-Locking,round, cataloged under National Stock Number 5310-01-075-5905, 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 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-075-5905 |
| Primary Part Number | BHM-19 |
| Item Name | Nut,self-Locking,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Whittet-Higgins Company |
| Status | ACTIVE |
| Thread Series | UNS |
| Drive Point Width | 0.375 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 3.730 INCHES IN |
| Nut Diameter | 4.937 INCHES NOMINAL IN |
| Drive Point Depth | 0.156 INCHES NOMINAL IN |
| Undercut Thickness | 0.203 INCHES NOMINAL IN |
| Locking Feature | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| Nut Thickness | 0.812 INCHES NOMINAL IN |
| Small End Diameter | 4.172 INCHES NOMINAL IN |
| Drive Point Quantity | 4 |
| Nut Style | ROUND |
| Thread Class | 2B |
| Thread Quantity Per Inch | 12 |
| Material | PLASTIC LOCKING INSERT |
| Material | STEEL COMP 1018 OR STEEL COMP 4140 OVERALL EXCEPT 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 |
|---|---|
| BHM-19 | Whittet-Higgins Company (USA) |
| Reference | Meaning |
|---|---|
| 3504-11 ITEM 52 | 5/9 Secondary reference U.S. Government activity |
| 3504-11 ITEM 52 | 5/2 Secondary reference U.S. Government activity |
| 81581-X | 3/2 Design control — primary reference U.S. Government activity |
| ESB009-19 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| ESB-009-19 | C/1 Advisory reference — outside the item-of-supply concept Hansome Energy Systems Inc |
| 81581-X | 3/9 Design control — primary reference U.S. Government activity |
| D-505-144 ITEM 107 | C/1 Advisory reference — outside the item-of-supply concept Hansome Energy Systems Inc |
NSN 5310-01-075-5905 is a Nut,self-Locking,round, manufactured by Whittet-Higgins Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-075-5905 has 1 manufacturer part number on file: BHM-19 (Whittet-Higgins Company).
Key specifications for BHM-19: Thread Series: UNS; Drive Point Width: 0.375 INCHES NOMINAL IN; Thread Direction: RIGHT-HAND; Nominal Thread Size: 3.730 INCHES IN. 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.