The Elbow,pipe to Tube, cataloged under National Stock Number 4730-01-646-6899, 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 14 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4730-01-646-6899 |
| Primary Part Number | 4-4X6EF-SS |
| Item Name | Elbow,pipe to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division |
| Status | ACTIVE |
| Flange Shape | HEXAGON FIRST END |
| Furnished Items and Quantity | 1 SWIVEL NUT |
| Flow Angle | 90.0 DEGREES |
| Connection Style | PLAIN (PIPE) SECOND END |
| Connection Style | SWIVEL NUT, FLARED (TUBE) FIRST END |
| Connection Type | THREADED EXTERNAL PIPE SECOND END |
| Connection Type | THREADED INTERNAL TUBE FIRST END |
| Operating Pressure | 6000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Thread Size | 0.250 INCHES SECOND END IN |
| Seat Angle | 37.0 DEGREES FIRST END |
| Media for Which Designed | HYDRAULIC FLUID SINGLE RESPONSE |
| Thread Quantity Per Inch | 18 SECOND END |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | NPT SECOND END |
| 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 |
|---|---|
| 4-4X6EF-SS PRIMARY | Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division (USA) |
| Reference | Meaning |
|---|---|
| 4-4X6EF-SS | 5/9 Secondary reference Caterpillar Inc Div Caterpillar Defense |
NSN 4730-01-646-6899 is a Elbow,pipe to 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 4730-01-646-6899 has 1 manufacturer part number on file: 4-4X6EF-SS (Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division).
Key specifications for 4-4X6EF-SS: Flange Shape: HEXAGON FIRST END; Furnished Items and Quantity: 1 SWIVEL NUT; Flow Angle: 90.0 DEGREES; Connection Style: PLAIN (PIPE) SECOND END. 14 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.