The Elbow,flange to Tube, cataloged under National Stock Number 4730-01-037-6593, 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 22 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-037-6593 |
| Primary Part Number | 745808 |
| 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 | 20.0 DEGREES |
| Flange Face Design | RECESSED STRAIGHT SECOND END |
| Surface Treatment Document and Classification | AMS2412 ASSN STD SINGLE TREATMENT RESPONSE OVERALLUNABLE TO DECODE |
| Connection Style | INVERTED FLARE (TUBE) FIRST END |
| Nominal Length | 1.850 INCHES SECOND END IN |
| Criticality Code Justification | AGAV |
| Connection Type | FLANGE SECOND END |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Material Document and Classification | AMS5640 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Bolt Hole Nominal Diameter | 0.281 INCHES SECOND END IN |
| Leg Length | 1.690 INCHES MINIMUM AND 1.730 INCHES MAXIMUM FIRST END IN |
| Leg Length | 2.804 INCHES MINIMUM AND 2.844 INCHES MAXIMUM SECOND END IN |
| Nominal Thread Size | 1.188 INCHES FIRST END IN |
| Seat Angle | 25.0 DEGREES FIRST END |
| Bolt Hole Quantity | 3 SECOND END |
| Surface Treatment | SILVER OVERALL |
| Nominal Width | 1.250 INCHES SECOND END IN |
| Thread Class | 3A FIRST END A |
| Thread Quantity Per Inch | 12 FIRST END |
| Material | STEEL 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 | Y |
| Part Number | Manufacturer |
|---|---|
| 745808 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 745808 | Rtx Corporation Div Pratt & Whitney (USA) |
| Reference | Meaning |
|---|---|
| 745808 | 3/9 Design control — primary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
NSN 4730-01-037-6593 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 4730-01-037-6593 has 2 manufacturer part numbers on file: 745808 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 745808 (Rtx Corporation Div Pratt & Whitney).
Key specifications for 745808: Flange Shape: TRIANGULAR WITH HOLES SECOND END; Flow Angle: 20.0 DEGREES; Flange Face Design: RECESSED STRAIGHT SECOND END; Surface Treatment Document and Classification: AMS2412 ASSN STD SINGLE TREATMENT RESPONSE OVERALLUNABLE TO DECODE. 22 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 4730-01-037-6593 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.