The Elbow,flange to Tube, cataloged under National Stock Number 4730-00-131-7737, 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 14 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4730-00-131-7737 |
| Item Name | Elbow,flange to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Flange Shape | RECTANGULAR WITH HOLES FIRST END |
| Flow Angle | 11.2 DEGREES |
| Flange Face Design | PLAIN FIRST END |
| Nominal Length | 3.014 INCHES FIRST END IN |
| Material Document and Classification | QQ-A-601 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Bolt Hole Nominal Diameter | 0.328 INCHES FIRST END IN |
| Nominal Outside Diameter Tube Accommodated | 2.000 INCHES SECOND END IN |
| Leg Length | 1.000 INCHES NOMINAL FIRST END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Width | 2.375 INCHES FIRST END IN |
| Bolt Hole Quantity | 4 FIRST END |
| Nominal Width | 3.014 INCHES FIRST END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Length | 2.375 INCHES FIRST END IN |
| Material | ALUMINUM ALLOY 356.0 OVERALL |
| Nominal Thickness | 0.006 INCHES FIRST 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 |
|---|---|
| 216-53403-2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4730-00-131-7737 is a Elbow,flange to Tube, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
Key specifications for 4730-00-131-7737: Flange Shape: RECTANGULAR WITH HOLES FIRST END; Flow Angle: 11.2 DEGREES; Flange Face Design: PLAIN FIRST END; Nominal Length: 3.014 INCHES FIRST END IN. 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.