PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

W1023Reducer,tube

Mueller Brass Co. · NSN 4730-00-289-4844 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-289-4844 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-289-4844. Primary manufacturer part number: W1023.
Features
  • Reducer,tube — FSC 4730
  • Nominal Outside Diameter Tube Accommodated: 0.500 INCHES FIRST END0.500 INCHES FIRST END IN
  • Connection Type: UNTHREADED INTERNAL TUBE ALL ENDSUNTHREADED INTERNAL TUBE ALL ENDS
  • Maximum Operating Temp: 37.8 CELSIUS SINGLE RESPONSE37.8 CELSIUS SINGLE RESPONSE DEGC
  • Connection Style: SOCKET (TUBE) ALL ENDSSOCKET (TUBE) ALL ENDS
  • Nominal Overall Length: 0.625 INCHES0.625 INCHES IN
  • Media for Which Designed: WATER-OIL-GAS SINGLE RESPONSEWATER-OIL-GAS SINGLE RESPONSE
  • Operating Pressure: 175.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE175.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy Overallcopper Alloy Overall construction
General Description

The Reducer,tube, cataloged under National Stock Number 4730-00-289-4844, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Mueller Brass Co.. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-289-4844
Primary Part NumberW1023
Item NameReducer,tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerMueller Brass Co.
StatusACTIVE
Nominal Outside Diameter Tube Accommodated0.500 INCHES FIRST END0.500 INCHES FIRST END IN
Connection TypeUNTHREADED INTERNAL TUBE ALL ENDSUNTHREADED INTERNAL TUBE ALL ENDS
Maximum Operating Temp37.8 CELSIUS SINGLE RESPONSE37.8 CELSIUS SINGLE RESPONSE DEGC
Connection StyleSOCKET (TUBE) ALL ENDSSOCKET (TUBE) ALL ENDS
Nominal Overall Length0.625 INCHES0.625 INCHES IN
Media for Which DesignedWATER-OIL-GAS SINGLE RESPONSEWATER-OIL-GAS SINGLE RESPONSE
Operating Pressure175.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE175.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
MaterialCOPPER ALLOY OVERALLCOPPER ALLOY OVERALL
Nominal Outside Diameter Tube Accommodated0.375 INCHES SECOND END0.375 INCHES SECOND END IN
Specification/standard Data80204-B16.22 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD80204-B16.22 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Reducer TypeCONCENTRICCONCENTRIC
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
4730-00-289-1269 INTERCHANGEABLE
Elbow,tube
4730-00-289-1271 INTERCHANGEABLE
Elbow,tube
4730-00-289-1272 INTERCHANGEABLE
Elbow,tube
4730-00-289-4172190519PC20 INTERCHANGEABLE
Adapter,straight,pipe to Tube
Johnson Controls Navy Systems, Llc
4730-01-024-8571 INTERCHANGEABLE
Adapter,straight,pipe to Tube
4730-01-024-8585 INTERCHANGEABLE
Coupling,pipe
4730-01-027-0961 INTERCHANGEABLE
Coupling,pipe
4730-01-028-5412 INTERCHANGEABLE
Elbow,pipe
Cross-Reference Index
Part NumberManufacturer
B16-22 American National Standards Institute Incorporated Dba American National Standards Institute (USA)
ASAB16-22 Esco Inc (USA)
W1023 PRIMARY Mueller Brass Co. (USA)
Related Parts
4730-00-289-1269INTERCHANGEABLE
ELBOW,TUBE
4730-00-289-1271INTERCHANGEABLE
ELBOW,TUBE
4730-00-289-1272INTERCHANGEABLE
ELBOW,TUBE
4730-00-289-4172INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
190519PC20
4730-01-024-8571INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
4730-01-024-8585INTERCHANGEABLE
COUPLING,PIPE
4730-01-027-0961INTERCHANGEABLE
COUPLING,PIPE
4730-01-028-5412INTERCHANGEABLE
ELBOW,PIPE

Frequently Asked Questions

What is NSN 4730-00-289-4844?

NSN 4730-00-289-4844 is a Reducer,tube, manufactured by Mueller Brass Co., classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-289-4844?

NSN 4730-00-289-4844 has 3 cross-referenced part numbers: B16-22 (American National Standards Institute Incorporated Dba American National Standards Institute), ASAB16-22 (Esco Inc), W1023 (Mueller Brass Co.).

What NSN replaces 4730-00-289-4844?

There are 8 known substitutes for 4730-00-289-4844: 4730-00-289-1269, 4730-00-289-1271, 4730-00-289-1272 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of W1023?

Key specifications for W1023: Nominal Outside Diameter Tube Accommodated: 0.500 INCHES FIRST END0.500 INCHES FIRST END IN; Connection Type: UNTHREADED INTERNAL TUBE ALL ENDSUNTHREADED INTERNAL TUBE ALL ENDS; Maximum Operating Temp: 37.8 CELSIUS SINGLE RESPONSE37.8 CELSIUS SINGLE RESPONSE DEGC; Connection Style: SOCKET (TUBE) ALL ENDSSOCKET (TUBE) ALL ENDS. 11 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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