The Tailpiece,union, cataloged under National Stock Number 4730-01-394-5447, 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 Emerson Automation Solutions Final Control Us Lp Div Navy Product Team. Government technical data includes 6 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-394-5447 |
| Primary Part Number | B14521.001.150 |
| Item Name | Tailpiece,union |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team |
| Status | ACTIVE |
| Flange Thickness | 0.313 INCHES NOMINAL IN |
| End Connection Type | WELDED |
| Seat Type | RECESSED FACE |
| Material | STEEL |
| Flange Outside Diameter | 2.188 INCHES NOMINAL IN |
| Working Pressure and Service Type | 6000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL GAS AND 6000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL OIL AND 6000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL WATER LBS |
| 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 |
|---|---|
| B14521.001.150 PRIMARY | Emerson Automation Solutions Final Control Us Lp Div Navy Product Team (USA) |
| Reference | Meaning |
|---|---|
| 803-1385884 | D/9 Drawing number reference only U.S. Government activity |
| B14521.001.150 | 5/9 Secondary reference Anderson Greenwood Lp Dba Anderson Greenwood Crosby |
| 803-1385884-PC6-1IN | 5/2 Secondary reference U.S. Government activity |
NSN 4730-01-394-5447 is a Tailpiece,union, manufactured by Emerson Automation Solutions Final Control Us Lp Div Navy Product Team, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-394-5447 has 1 manufacturer part number on file: B14521.001.150 (Emerson Automation Solutions Final Control Us Lp Div Navy Product Team).
4 possible matches (shared part number, not a government interchangeability claim): 4730-01-482-2668, 4730-01-628-2333, 4730-01-690-0791. Verify interchangeability with system specifications before substitution.
Key specifications for B14521.001.150: Flange Thickness: 0.313 INCHES NOMINAL IN; End Connection Type: WELDED; Overall Length: 1.250 INCHES NOMINAL IN; Seat Type: RECESSED FACE. 6 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.