The Swivel Joint,hydraulic, cataloged under National Stock Number 4730-01-278-3833, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 23 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-278-3833 |
| Item Name | Swivel Joint,hydraulic |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Flange Shape | ROUND WITH HOLES SECOND END |
| Flange Face Design | RAISED STRAIGHT SECOND END |
| Connection Style | PLAIN (PIPE) FIRST END |
| Bolt Circle Nominal Diameter | 3.125 INCHES SECOND END IN |
| Nominal Overall Length | 7.438 INCHES IN |
| Connection Type | FLANGE SECOND END |
| Connection Type | THREADED EXTERNAL PIPE FIRST END |
| Style Designator | SINGLE JOINT, ELBOW DESIGN |
| Bolt Hole Nominal Diameter | 0.438 INCHES SECOND END IN |
| Leg Length | 1.438 INCHES NOMINAL FIRST END IN |
| Leg Length | 6.281 INCHES NOMINAL SECOND END IN |
| Nominal Thread Size | 0.750 INCHES FIRST END IN |
| Nominal Outside Diameter | 4.375 INCHES SECOND END IN |
| Bolt Hole Quantity | 4 SECOND END |
| Bearing Type | ANNULAR BALL, NONREMOVABLE |
| Media for Which Designed | HYDRAULIC FLUID SINGLE RESPONSE |
| Material | STEEL RETAINER |
| Material | ALUMINUM SLEEVE |
| Material | NICKEL ALLOY SHOULDER |
| Thread Series Designator | NPT FIRST END |
| Raised Face Nominal Diameter | 1.563 INCHES SECOND END IN |
| Raised Face Nominal Height | 0.750 INCHES SECOND END IN |
| Nominal Thickness | 0.375 INCHES SECOND END IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 250-094-891 | 3/9 Design control — primary reference U.S. Government activity |
NSN 4730-01-278-3833 is a Swivel Joint,hydraulic, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-01-278-3833: Flange Shape: ROUND WITH HOLES SECOND END; Flange Face Design: RAISED STRAIGHT SECOND END; Connection Style: PLAIN (PIPE) FIRST END; Bolt Circle Nominal Diameter: 3.125 INCHES SECOND END IN. 23 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.