4730-01-502-4349 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Features
Tailpiece,union — FSC 4730
Nominal Pipe Size Designation: 0.250 INCHES IN
Tubing Outside Diameter: 0.250 INCHES NOMINAL IN
Material: COPPER ALLOY
Working Pressure and Service Type: 400.0 POUNDS PER SQUARE INCH (PSI) NOMINAL GAS AND 400.0 POUNDS PER SQUARE INCH (PSI) NOMINAL HYDRAULIC OIL AND 400.0 POUNDS PER SQUARE INCH (PSI) NOMINAL OIL AND 200.0 POUNDS PER SQUARE INCH (PSI) NOMINAL STEAM AND 400.0 POUNDS PER SQUARE INCH (PSI) NOMINAL WATER LBS
Identification
NSN: 4730-01-502-4349
NIIN: 015024349
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
FSG: 47 — Pipe, Tubing, Hose, and Fittings
General Description
The Tailpiece,union, cataloged under National Stock Number 4730-01-502-4349, 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 4 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
400.0 POUNDS PER SQUARE INCH (PSI) NOMINAL GAS AND 400.0 POUNDS PER SQUARE INCH (PSI) NOMINAL HYDRAULIC OIL AND 400.0 POUNDS PER SQUARE INCH (PSI) NOMINAL OIL AND 200.0 POUNDS PER SQUARE INCH (PSI) NOMINAL STEAM AND 400.0 POUNDS PER SQUARE INCH (PSI) NOMINAL WATER LBS
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
77555038
3/9Design control — primary reference
W & O Supply Inc
77555038
5/9Secondary reference
3com Corp
No interchangeability data on file.
Other items in FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895
4730-00-000-1895 · Item name not on file
4730-00-000-4289
4730-00-000-4289 · Item name not on file
4730-00-000-4445
4730-00-000-4445 · Item name not on file
4730-00-000-8373
4730-00-000-8373 · Item name not on file
4730-00-000-8897
4730-00-000-8897 · Item name not on file
4730-00-001-0007
4730-00-001-0007 · Item name not on file
4730-00-001-0008
COUPLING,TUBE
4730-00-001-0008
COUPLING,TUBE
Frequently Asked Questions
What is NSN 4730-01-502-4349?
NSN 4730-01-502-4349 is a Tailpiece,union, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
What are the specifications of 4730-01-502-4349?
Key specifications for 4730-01-502-4349: Nominal Pipe Size Designation: 0.250 INCHES IN; Tubing Outside Diameter: 0.250 INCHES NOMINAL IN; Special Features: MATERIAL IS 70/30 COPPER ALLOY; Part Name Assigned by Controlling Agency: UNION TAILPIECE 400PSI, 70/30, 1/4IPS X 1/4O.D.. 4 specifications are documented in the U.S. Government catalog.
Is NSN 4730-01-502-4349 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.