The Union,tube, cataloged under National Stock Number 4730-01-252-6934, 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 Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-252-6934 |
| Primary Part Number | 8-6HBU-SS |
| Item Name | Union,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division |
| Status | ACTIVE |
| Connection Style | INVERTED FLARE (TUBE) ALL ENDS |
| Nominal Overall Length | 1.420 INCHES IN |
| Connection Type | THREADED EXTERNAL TUBE ALL ENDS |
| Style Designator | SCREWED |
| Nominal Outside Diameter Tube Accommodated | 0.375 INCHES SECOND END IN |
| Nominal Outside Diameter Tube Accommodated | 0.500 INCHES FIRST END IN |
| Seat Type | BEVELED |
| Nominal Thread Size | 0.625 INCHES SECOND END IN |
| Nominal Thread Size | 0.750 INCHES FIRST END IN |
| Seat Angle | 37.0 DEGREES ALL ENDS |
| Thread Class | 2A ALL ENDS A |
| Thread Quantity Per Inch | 18 FIRST END |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNS FIRST END |
| Thread Series Designator | UNF SECOND END |
| Reducer Type | CONCENTRIC |
| 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 |
|---|---|
| 8-6HBU-SS PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division (USA) |
| Reference | Meaning |
|---|---|
| 8-6HBU-SS | 5/9 Secondary reference U.S. Government activity |
| 8-6HBU-SS | 3/9 Design control — primary reference Parker-Hannifin Corporation Div Tube Fittings Division |
NSN 4730-01-252-6934 is a Union,tube, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-252-6934 has 1 manufacturer part number on file: 8-6HBU-SS (Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division).
Key specifications for 8-6HBU-SS: Connection Style: INVERTED FLARE (TUBE) ALL ENDS; Nominal Overall Length: 1.420 INCHES IN; Connection Type: THREADED EXTERNAL TUBE ALL ENDS; Style Designator: SCREWED. 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.