The Tailpiece,union, cataloged under National Stock Number 4730-00-475-3529, 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 Western Enterprises Div of Scott and Fetzer Co. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4730-00-475-3529 |
| Primary Part Number | 15-3 |
| Item Name | Tailpiece,union |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Western Enterprises Div of Scott and Fetzer Co |
| Status | ACTIVE |
| Union Outside Diameter | 0.250 INCHES NOMINAL IN |
| End Connection Type | THREADED |
| Seat Type | ANGLE |
| Thread Direction | RIGHT-HAND |
| Thread Size | 0.250-18 |
| Screw Thread Series Designator | NPT |
| Screw Thread Location | INTERNAL |
| Material | COPPER ALLOY 360 |
| Working Pressure and Service Type | 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM GAS LBS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4730-00-475-3529 is a Tailpiece,union, manufactured by Western Enterprises Div of Scott and Fetzer Co, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-00-475-3529 has 2 manufacturer part numbers on file: 15-3 (Western Enterprises Div of Scott and Fetzer Co), 0553-2030 (Messer Llc).
1 possible match (shared part number, not a government interchangeability claim): 5306-01-197-2519. Verify interchangeability with system specifications before substitution.
Key specifications for 15-3: Union Outside Diameter: 0.250 INCHES NOMINAL IN; End Connection Type: THREADED; Overall Length: 3.000 INCHES NOMINAL IN; Seat Type: ANGLE. 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.