The Elbow,flange to Tube, cataloged under National Stock Number 4730-00-019-1990, 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 Elwood William J Inc. Government technical data includes 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4730-00-019-1990 |
| Primary Part Number | 457676 |
| Item Name | Elbow,flange to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Elwood William J Inc |
| Status | ACTIVE |
| Flange Shape | ROUND SECOND END |
| Flow Angle | 90.0 DEGREES |
| Flange Face Design | RAISED STRAIGHT SECOND END |
| Connection Style | CUSHION SEAL (TUBE) FIRST END |
| Material Document and Classification | AMS4135 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Outside Diameter Tube Accommodated | 0.875 INCHES FIRST END IN |
| Leg Length | 1.535 INCHES MINIMUM AND 1.565 INCHES MAXIMUM SECOND END IN |
| Leg Length | 1.990 INCHES MINIMUM AND 2.010 INCHES MAXIMUM FIRST END IN |
| Nominal Thread Size | 1.500 INCHES FIRST END IN |
| Nominal Outside Diameter | 1.844 INCHES SECOND END IN |
| Thread Class | 1A FIRST END A |
| Thread Quantity Per Inch | 12 FIRST END |
| Material | ALUMINUM ALLOY OVERALL |
| Thread Series Designator | UNS FIRST END |
| Raised Face Nominal Diameter | 1.247 INCHES SECOND END IN |
| Raised Face Nominal Height | 0.238 INCHES SECOND END IN |
| Nominal Thickness | 0.238 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 |
NSN 4730-00-019-1990 is a Elbow,flange to Tube, manufactured by Elwood William J Inc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-019-1990 has 2 manufacturer part numbers on file: 457676 (Elwood William J Inc), 457676 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for 457676: Flange Shape: ROUND SECOND END; Flow Angle: 90.0 DEGREES; Flange Face Design: RAISED STRAIGHT SECOND END; Connection Style: CUSHION SEAL (TUBE) FIRST END. 17 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.