The Locknut,tube Fitting, cataloged under National Stock Number 4730-01-520-3279, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is The Boeing Company Div Commercial. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-520-3279 |
| Primary Part Number | BACN10DU10 |
| Item Name | Locknut,tube Fitting |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | The Boeing Company Div Commercial |
| Status | ACTIVE |
| Width Across Flats | 1.125 INCHES NOMINAL IN |
| Packing Recess Diameter | 0.100 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Nut Height | 0.391 INCHES NOMINAL IN |
| Nut Style | TUBE FITTING LOCKNUT |
| Material | STEEL COMP 633 OVERALL |
| Nominal Tube Outside Diameter | 0.625 INCHES IN |
| Packing Recess Depth | 0.054 INCHES NOMINAL IN |
| 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 |
|---|---|
| BACN10DU10 PRIMARY | The Boeing Company Div Commercial (USA) |
| Reference | Meaning |
|---|---|
| BACN10DU10 | 5/9 Secondary reference U.S. Government activity |
NSN 4730-01-520-3279 is a Locknut,tube Fitting, manufactured by The Boeing Company Div Commercial, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-520-3279 has 1 manufacturer part number on file: BACN10DU10 (The Boeing Company Div Commercial).
Key specifications for BACN10DU10: Width Across Flats: 1.125 INCHES NOMINAL IN; Packing Recess Diameter: 0.100 INCHES NOMINAL IN; Thread Direction: RIGHT-HAND; Nut Height: 0.391 INCHES NOMINAL IN. 8 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.