The Elbow,pipe to Tube, cataloged under National Stock Number 4730-01-256-3588, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-01-256-3588 |
| Item Name | Elbow,pipe to Tube |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Status | ACTIVE |
| Furnished Items and Quantity | 1 TUBE COUPLING NUT W/SLEEVE |
| Flow Angle | 90.0 DEGREES |
| Surface Treatment Document and Classification | J514 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Connection Style | FLARELESS (TUBE) FIRST END |
| Connection Style | PLAIN (PIPE) SECOND END |
| Connection Type | THREADED EXTERNAL PIPE SECOND END |
| Connection Type | THREADED EXTERNAL TUBE FIRST END |
| Nominal Outside Diameter Tube Accommodated | 1.500 INCHES FIRST END IN |
| Leg Length | 2.640 INCHES NOMINAL SECOND END IN |
| Leg Length | 2.020 INCHES NOMINAL FIRST END IN |
| Nominal Thread Size | 1.500 INCHES SECOND END IN |
| Nominal Thread Size | 1.875 INCHES FIRST END IN |
| Seat Angle | 12.0 DEGREES FIRST END |
| Specification/standard Data | 81343-J514 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Nondefinitive Spec/std Data | 21A FIGURE A |
| Thread Class | 2A FIRST END A |
| Thread Quantity Per Inch | 12 FIRST END |
| Material | STEEL COMP 316 OVERALL |
| Thread Series Designator | UN FIRST END |
| Thread Series Designator | NPTF SECOND END |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| J514 | 5/1 Secondary reference Sae International Dba Sae International |
| MS51815-21SS | 2/2 Government specification standardization U.S. Government activity |
| J514 | 5/9 Secondary reference U.S. Government activity |
| MIL-DTL-18866 | 4/1 Identification reference U.S. Government activity |
| 24-CBU-SS | 5/1 Secondary reference Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division |
| 24-24 080202S | 5/9 Secondary reference U.S. Government activity |
| 24-24 080202S | 5/1 Secondary reference Sae International Dba Sae International |
| 24-CBU-SS | 5/9 Secondary reference U.S. Government activity |
NSN 4730-01-256-3588 is a Elbow,pipe to Tube, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4730-01-723-7418. Verify interchangeability with system specifications before substitution.
Key specifications for 4730-01-256-3588: Furnished Items and Quantity: 1 TUBE COUPLING NUT W/SLEEVE; Flow Angle: 90.0 DEGREES; Surface Treatment Document and Classification: J514 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Connection Style: FLARELESS (TUBE) FIRST END. 20 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.