The Elbow,tube, cataloged under National Stock Number 4730-00-021-5239, 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 9 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-00-021-5239 |
| Primary Part Number | 590079 |
| Item Name | Elbow,tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Connection Style | FLARED (TUBE) FIRST END |
| Material Document and Classification | AMS 5646 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Leg Length | 1.240 INCHES MINIMUM AND 1.270 INCHES MAXIMUM FIRST END IN |
| Nominal Thread Size | 1.062 INCHES FIRST END IN |
| Seat Angle | 37.0 DEGREES FIRST END |
| Thread Class | 3A FIRST END A |
| Thread Quantity Per Inch | 12 FIRST END |
| Material | STEEL OVERALL |
| Thread Series Designator | UN FIRST END |
| 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 |
|---|---|
| 590079 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
NSN 4730-00-021-5239 is a Elbow,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 4730-00-021-5239 has 1 manufacturer part number on file: 590079 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
1 possible match (shared part number, not a government interchangeability claim): 5930-00-050-5262. Verify interchangeability with system specifications before substitution.
Key specifications for 590079: Connection Style: FLARED (TUBE) FIRST END; Material Document and Classification: AMS 5646 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Leg Length: 1.240 INCHES MINIMUM AND 1.270 INCHES MAXIMUM FIRST END IN; Nominal Thread Size: 1.062 INCHES FIRST END IN. 9 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.