The Elbow,pipe to Tube, cataloged under National Stock Number 4730-00-490-6256, 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 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4730-00-490-6256 |
| Primary Part Number | 2519168-1 |
| Item Name | Elbow,pipe to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Furnished Items and Quantity | 2 FERRULE SLEEVE AND 1 SHORT COUPLING NUT |
| Flow Angle | 90.0 DEGREES |
| Nominal Pipe Size Accommodated | 0.250 INCHES SECOND END IN |
| Connection Style | FLARELESS (TUBE) FIRST END |
| Connection Style | PLAIN (PIPE) SECOND END |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Connection Type | THREADED INTERNAL PIPE SECOND END |
| Nominal Outside Diameter Tube Accommodated | 0.250 INCHES FIRST END IN |
| Leg Length | 0.844 INCHES NOMINAL SECOND END IN |
| Leg Length | 0.875 INCHES NOMINAL FIRST END IN |
| Nominal Thread Size | 0.438 INCHES FIRST END IN |
| Nominal Thread Size | 0.250 INCHES SECOND END IN |
| Seat Angle | 20.0 DEGREES FIRST END |
| Thread Class | 3A FIRST END A |
| Material | ALUMINUM ALLOY OVERALL |
| Thread Series Designator | NPT SECOND END |
| Thread Series Designator | UNF 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 |
|---|---|
| 4-2FE-4-A | Tylok International, Inc. (USA) |
| 4-4DBZ-A | Parker Hannifin Corp Stratoflex Div Aircraft Fittings Opn (USA) |
| 2519168-1 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| A-400-8-4 | Swagelok Co (USA) |
| 4-4DBZ-A | Parker-Hannifin Corporation Div Instrumentation Products Division (USA) |
| Reference | Meaning |
|---|---|
| 4-4DBZ-D | 5/9 Secondary reference Parker-Hannifin Corporation Div Instrumentation Products Division |
NSN 4730-00-490-6256 is a Elbow,pipe to Tube, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-490-6256 has 5 manufacturer part numbers on file: 4-2FE-4-A (Tylok International, Inc.), 4-4DBZ-A (Parker Hannifin Corp Stratoflex Div Aircraft Fittings Opn), 2519168-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), A-400-8-4 (Swagelok Co), 4-4DBZ-A (Parker-Hannifin Corporation Div Instrumentation Products Division).
Key specifications for 2519168-1: Furnished Items and Quantity: 2 FERRULE SLEEVE AND 1 SHORT COUPLING NUT; Flow Angle: 90.0 DEGREES; Nominal Pipe Size Accommodated: 0.250 INCHES SECOND END IN; Connection Style: FLARELESS (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.