NSN 4730-01-006-5539 · NIIN 010065539 · Part number 837-250
Nibco Inc Chemtrol Div · FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings · FSG 47 — Pipe, Tubing, Hose, and Fittings · CAGE 61623
Government record, cited
NSN 4730-01-006-5539 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-006-5539. Manufacturer of record part number: 837-250.
Also searched as4730-01-006-5539 ·
4730010065539 ·
NIIN 010065539 ·
01-006-5539 ·
FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings · CAGE 61623 · 837-250 · 01049052 · 8214
Nearby stock numbers← 4730-01-006-5538
·
4730-01-006-5540 Adapter, Straight, Tube to Boss →
4730-01-006-5539 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Features
Reducer,pipe — FSC 4730
Nominal Pipe Size Accommodated: 2.000 INCHES SECOND END IN
Nominal Pipe Size Accommodated: 1.250 INCHES FIRST END IN
Connection Style: SOCKET (PIPE) FIRST END
Connection Style: PLAIN (PIPE) SECOND END
Nominal Overall Length: 1.781 INCHES IN
Connection Type: UNTHREADED INTERNAL PIPE FIRST END
Connection Type: UNTHREADED EXTERNAL PIPE SECOND END
Identification
NSN: 4730-01-006-5539
NIIN: 010065539
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
FSG: 47 — Pipe, Tubing, Hose, and Fittings
Primary part number: 837-250
Manufacturer: Nibco Inc Chemtrol Div
General Description
The Reducer,pipe, cataloged under National Stock Number 4730-01-006-5539, 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 Nibco Inc Chemtrol Div. Government technical data includes 11 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
NSN 4730-01-006-5539 is a Reducer,pipe, manufactured by Nibco Inc Chemtrol Div, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
What part numbers are listed for NSN 4730-01-006-5539?
NSN 4730-01-006-5539 has 2 manufacturer part numbers on file: 837-250 (Nibco Inc Chemtrol Div), 0141170-250 (Cleveland Service Center).
What NSN replaces 4730-01-006-5539?
8 possible matches (shared part number, not a government interchangeability claim): 5962-01-057-0662, 4320-01-068-6066, 4240-01-386-5462. Verify interchangeability with system specifications before substitution.
What are the specifications of 837-250?
Key specifications for 837-250: Nominal Pipe Size Accommodated: 2.000 INCHES SECOND END IN; Nominal Pipe Size Accommodated: 1.250 INCHES FIRST END IN; Connection Style: SOCKET (PIPE) FIRST END; Connection Style: PLAIN (PIPE) SECOND END. 11 specifications are documented in the U.S. Government catalog.
Is NSN 4730-01-006-5539 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.