NSN 4730-01-189-4604 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-189-4604. Manufacturer of record part number: B1900-5106.
Also searched as4730-01-189-4604 ·
4730011894604 ·
NIIN 011894604 ·
01-189-4604 ·
FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings · CAGE 37562 · B1900-5106
4730-01-189-4604 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Features
Reducer,pipe — FSC 4730
Nominal Overall Length: 6.000 INCHES IN
Nominal Thread Size: 0.500 INCHES SECOND END IN
Nominal Thread Size: 0.750 INCHES FIRST END IN
Material: STEEL OVERALL
Thread Series Designator: NPT SECOND END
Thread Series Designator: UNF FIRST END
Reducer Type: CONCENTRIC
Identification
NSN: 4730-01-189-4604
NIIN: 011894604
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
FSG: 47 — Pipe, Tubing, Hose, and Fittings
Primary part number: B1900-5106
Manufacturer: Macleod Inc
General Description
The Reducer,pipe, cataloged under National Stock Number 4730-01-189-4604, 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 Macleod Inc. Government technical data includes 7 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. Current acquisition status: Active.
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 4730-01-189-4604?
NSN 4730-01-189-4604 is a Reducer,pipe, manufactured by Macleod Inc, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
What part numbers are listed for NSN 4730-01-189-4604?
NSN 4730-01-189-4604 has 1 manufacturer part number on file: B1900-5106 (Macleod Inc).
What are the specifications of B1900-5106?
Key specifications for B1900-5106: Nominal Overall Length: 6.000 INCHES IN; Nominal Thread Size: 0.500 INCHES SECOND END IN; Nominal Thread Size: 0.750 INCHES FIRST END IN; End Item Identification: WATER DISTRIBUTION SYSTEMS.. 7 specifications are documented in the U.S. Government catalog.
Is NSN 4730-01-189-4604 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.