The Elbow,flange to Tube, cataloged under National Stock Number 4730-00-478-7171, 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23 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4730-00-478-7171 |
| Item Name | Elbow,flange to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Flange Shape | OVAL WITH HOLES SECOND END |
| Flow Angle | 45.0 DEGREES |
| Flange Face Design | PLAIN SECOND END |
| Surface Treatment Document and Classification | AMS2400-3 ASSN STD SINGLE TREATMENT RESPONSE OVERALLUNABLE TO DECODE |
| Connection Style | FLARED (TUBE) FIRST END |
| Nominal Length | 1.995 INCHES SECOND END IN |
| Bolt Circle Nominal Diameter | 1.375 INCHES SECOND END IN |
| Connection Type | FLANGE SECOND END |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Bolt Hole Nominal Diameter | 0.205 INCHES SECOND END IN |
| Nominal Outside Diameter Tube Accommodated | 0.750 INCHES FIRST END IN |
| Leg Length | 1.125 INCHES NOMINAL SECOND END IN |
| Leg Length | 1.266 INCHES NOMINAL FIRST END IN |
| Nominal Thread Size | 1.062 INCHES FIRST END IN |
| Seat Angle | 37.0 DEGREES FIRST END |
| Bolt Hole Quantity | 2 SECOND END |
| Surface Treatment | CADMIUM OVERALLUNABLE TO DECODE |
| Nominal Width | 1.000 INCHES SECOND END IN |
| Thread Class | 3A FIRST END A |
| Thread Quantity Per Inch | 12 FIRST END |
| Material | STEEL OVERALLUNABLE TO DECODE |
| Thread Series Designator | UN FIRST END |
| Nominal Thickness | 0.188 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 |
|---|---|
| LTCT8568-01 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-00-478-7171 is a Elbow,flange to Tube, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-00-478-7171: Flange Shape: OVAL WITH HOLES SECOND END; Flow Angle: 45.0 DEGREES; Flange Face Design: PLAIN SECOND END; Surface Treatment Document and Classification: AMS2400-3 ASSN STD SINGLE TREATMENT RESPONSE OVERALLUNABLE TO DECODE. 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.