The Elbow,flange to Tube, cataloged under National Stock Number 4730-01-040-3513, 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 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 18 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-040-3513 |
| Primary Part Number | 745746 |
| Item Name | Elbow,flange to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Flange Shape | TRIANGULAR WITH HOLES SECOND END |
| Flow Angle | 90.0 DEGREES |
| Flange Face Design | RAISED STRAIGHT SECOND END |
| Nominal Length | 2.312 INCHES SECOND END IN |
| Bolt Circle Nominal Diameter | 1.898 INCHES SECOND END IN |
| Connection Type | FLANGE SECOND END |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Material Document and Classification | AMS4135 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Bolt Hole Nominal Diameter | 0.281 INCHES SECOND END IN |
| Leg Length | 2.148 INCHES MINIMUM AND 2.178 INCHES MAXIMUM SECOND END IN |
| Leg Length | 2.260 INCHES MINIMUM AND 2.280 INCHES MAXIMUM FIRST END IN |
| Nominal Thread Size | 1.500 INCHES FIRST END IN |
| Seat Angle | 25.0 DEGREES FIRST END |
| Bolt Hole Quantity | 3 SECOND END |
| Thread Class | 3A FIRST END A |
| Thread Quantity Per Inch | 12 FIRST END |
| Material | ALUMINUM ALLOY OVERALL |
| Thread Series Designator | UNS FIRST END |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
NSN 4730-01-040-3513 is a Elbow,flange to Tube, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-040-3513 has 2 manufacturer part numbers on file: 745746 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 745746 (Rtx Corporation Div Pratt & Whitney).
Key specifications for 745746: Flange Shape: TRIANGULAR WITH HOLES SECOND END; Flow Angle: 90.0 DEGREES; Flange Face Design: RAISED STRAIGHT SECOND END; Nominal Length: 2.312 INCHES SECOND END IN. 18 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.
NSN 4730-01-040-3513 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.