The Nut,self-Locking,round, cataloged under National Stock Number 5310-00-803-9641, 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 13 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-00-803-9641 |
| Primary Part Number | BLN07 |
| Item Name | Nut,self-Locking,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Whittet-Higgins Company |
| Status | ACTIVE |
| Thread Series | UNEF |
| Drive Point Width | 0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN |
| Thread Direction | LEFT-HAND |
| Nominal Thread Size | 1.375 INCHES IN |
| Nut Diameter | 2.047 INCHES MINIMUM AND 2.057 INCHES MAXIMUM IN |
| Drive Point Depth | 0.083 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN |
| Locking Feature | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| Nut Thickness | 0.484 INCHES NOMINAL IN |
| Drive Point Quantity | 4 |
| Nut Style | ROUND |
| Thread Class | 3B |
| Thread Quantity Per Inch | 18 |
| Material | STEEL NUT |
| 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 |
|---|---|
| BHL-07 | Whittet-Higgins Company (USA) |
| BLN07 PRIMARY | Whittet-Higgins Company (USA) |
| Reference | Meaning |
|---|---|
| WX-124PCW | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| BL-N-07 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5310-00-803-9641 is a Nut,self-Locking,round, manufactured by Whittet-Higgins Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-803-9641 has 2 manufacturer part numbers on file: BHL-07 (Whittet-Higgins Company), BLN07 (Whittet-Higgins Company).
Key specifications for BLN07: Thread Series: UNEF; Drive Point Width: 0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM IN; Thread Direction: LEFT-HAND; Nominal Thread Size: 1.375 INCHES IN. 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.