The Elbow,flange to Tube, cataloged under National Stock Number 4730-01-366-3729, 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 The Boeing Company Div Defense. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4730-01-366-3729 |
| Primary Part Number | 74A586255-1013 |
| Item Name | Elbow,flange to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Flange Shape | RECTANGULAR WITH HOLES SECOND END |
| Flange Face Design | PLAIN SECOND END |
| Connection Style | GROOVED (TUBE) FIRST END |
| Nominal Length | 0.930 INCHES SECOND END IN |
| Tubing Wall Nominal Thickness for Which Designed | 0.125 INCHES FIRST END IN |
| Connection Type | FLANGE SECOND END |
| Connection Type | UNTHREADED EXTERNAL TUBE FIRST END |
| Material Document and Classification | A356-T61 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 0.500 INCHES FIRST END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Width | 0.755 INCHES SECOND END IN |
| Bolt Hole Quantity | 4 SECOND END |
| Nominal Width | 0.969 INCHES SECOND END IN |
| Center to Center Nominal Distance Between Bolt Holes Along Length | 0.969 INCHES SECOND END IN |
| Media for Which Designed | FUEL SINGLE RESPONSE |
| Material | ALUMINUM ALLOY A356.0 OVERALL |
| Nominal Thickness | 0.062 INCHES ALL ENDS IN |
| 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 |
|---|---|
| 74A586255-1013 | Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems (USA) |
| 74A586255-1013 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 10109076 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 74A586255 | D/9 Drawing number reference only The Boeing Company Div Defense |
NSN 4730-01-366-3729 is a Elbow,flange to Tube, manufactured by The Boeing Company Div Defense, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-366-3729 has 2 manufacturer part numbers on file: 74A586255-1013 (Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems), 74A586255-1013 (The Boeing Company Div Defense).
Key specifications for 74A586255-1013: Flange Shape: RECTANGULAR WITH HOLES SECOND END; Flange Face Design: PLAIN SECOND END; Connection Style: GROOVED (TUBE) FIRST END; Nominal Length: 0.930 INCHES SECOND END IN. 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.