NSN 4730-01-656-3173 · NIIN 016563173 · Part number 4DS4-B
Echelon Supply and Service, Inc. · FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings · FSG 47 — Pipe, Tubing, Hose, and Fittings · CAGE 61125
Government record, cited
NSN 4730-01-656-3173 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-656-3173. Manufacturer of record part number: 4DS4-B.
Also searched as4730-01-656-3173 ·
4730016563173 ·
NIIN 016563173 ·
01-656-3173 ·
FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings · CAGE 61125 · 4DS4-B
Nearby stock numbers← 4730-01-656-3169 Adapter, Straight, Pipe to Boss
·
4730-01-656-3267 Connector, Air Hose →
4730-01-656-3173 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Features
Coupling Half,quick Disconnect — FSC 4730
Connection Style: BARBED OR SERRATED END SECOND QUICK DISCONNECT END
Nominal Inside Diameter Hose Accommodated: 0.500 INCHES SECOND QUICK DISCONNECT END IN
Connection Type: UNTHREADED EXTERNAL HOSE SECOND QUICK DISCONNECT END
Style Designator: FEMALE COUPLING HALF
Operating Pressure: 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Material: RUBBER SYNTHETIC GASKET
Material: COPPER ALLOY OVERALL
Identification
NSN: 4730-01-656-3173
NIIN: 016563173
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
FSG: 47 — Pipe, Tubing, Hose, and Fittings
Primary part number: 4DS4-B
Manufacturer: Echelon Supply and Service, Inc.
General Description
The Coupling Half,quick Disconnect, cataloged under National Stock Number 4730-01-656-3173, 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 Echelon Supply and Service, 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 4730-01-656-3173?
NSN 4730-01-656-3173 is a Coupling Half,quick Disconnect, manufactured by Echelon Supply and Service, Inc., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
What part numbers are listed for NSN 4730-01-656-3173?
NSN 4730-01-656-3173 has 1 manufacturer part number on file: 4DS4-B (Echelon Supply and Service, Inc.).
What are the specifications of 4DS4-B?
Key specifications for 4DS4-B: Connection Style: BARBED OR SERRATED END SECOND QUICK DISCONNECT END; Nominal Inside Diameter Hose Accommodated: 0.500 INCHES SECOND QUICK DISCONNECT END IN; Connection Type: UNTHREADED EXTERNAL HOSE SECOND QUICK DISCONNECT END; Style Designator: FEMALE COUPLING HALF. 7 specifications are documented in the U.S. Government catalog.
Is NSN 4730-01-656-3173 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.