PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

WWP460CLASSAReducer,pipe

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 4730-00-189-3044 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-189-3044 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-189-3044. Primary manufacturer part number: WWP460CLASSA.
Features
  • Reducer,pipe — FSC 4730
  • Reducer Type: CONCENTRIC
  • Material Document and Classification: ASTM B62 ASSN STD 1ST MATERIAL RESPONSE AND QQ-C-390 FED SPEC 2ND MATERIAL RESPONSE OVERALL
  • Maximum Operating Temp: 150.0 FAHRENHEIT SECOND RESPONSE DEGF
  • Connection Type: THREADED INTERNAL PIPE ALL ENDS
  • Maximum Operating Temp: 400.0 FAHRENHEIT FIRST RESPONSE DEGF
  • Media for Which Designed: WATER-OIL-GAS SECOND RESPONSE
  • Nominal Thread Size: 1.250 INCHES SECOND END IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy 836 or Copper Alloy Overall construction
General Description

The Reducer,pipe, cataloged under National Stock Number 4730-00-189-3044, 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 Federal Specifications Promulgated by General Services Administration Washington DC. Government technical data includes 27 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-189-3044
Primary Part NumberWWP460CLASSA
Item NameReducer,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusCANCELLED
Reducer TypeCONCENTRIC
Material Document and ClassificationASTM B62 ASSN STD 1ST MATERIAL RESPONSE AND QQ-C-390 FED SPEC 2ND MATERIAL RESPONSE OVERALL
Maximum Operating Temp150.0 FAHRENHEIT SECOND RESPONSE DEGF
Connection TypeTHREADED INTERNAL PIPE ALL ENDS
Maximum Operating Temp400.0 FAHRENHEIT FIRST RESPONSE DEGF
Media for Which DesignedWATER-OIL-GAS SECOND RESPONSE
Nominal Thread Size1.250 INCHES SECOND END IN
MaterialCOPPER ALLOY 836 OR COPPER ALLOY OVERALL
Operating Pressure125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
Specification/standard Data81348-WW-P-460 GOVERNMENT SPECIFICATION
Thread Series DesignatorNPT ALL ENDS
Media for Which DesignedFLUID THIRD RESPONSE
Nondefinitive Spec/std DataA CLASS AND 1 RATING
MaterialCOPPER ALLOY 836 OR COPPER ALLOY OVERALL
Nominal Overall Length2.030 INCHES IN
Media for Which DesignedFLUID THIRD RESPONSE
Nominal Thread Size1.250 INCHES SECOND END IN
Material Document and ClassificationASTM B62 ASSN STD 1ST MATERIAL RESPONSE AND QQ-C-390 FED SPEC 2ND MATERIAL RESPONSE OVERALL
Operating Pressure175.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS
Operating Pressure175.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS
Connection StylePLAIN (PIPE) ALL ENDS
Specification/standard Data81348-WW-P-460 GOVERNMENT SPECIFICATION
Nondefinitive Spec/std DataA CLASS AND 1 RATING
Media for Which DesignedSTEAM FIRST RESPONSE
Nominal Thread Size2.000 INCHES FIRST END IN
Nominal Overall Length2.030 INCHES IN
Thread Series DesignatorNPT ALL ENDS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4730-00-053-0266 INTERCHANGEABLE
Elbow,pipe
4730-00-187-7648 INTERCHANGEABLE
Coupling,pipe
4730-00-189-3042 INTERCHANGEABLE
Reducer,pipe
4730-00-203-8350 INTERCHANGEABLE
Coupling,pipe
4730-00-231-2386 INTERCHANGEABLE
Cap,pipe
4730-00-231-2400 INTERCHANGEABLE
Cap,pipe
4730-00-231-2407 INTERCHANGEABLE
Cap,pipe
4730-00-249-2065 INTERCHANGEABLE
Tee,pipe
4730-00-249-3875 INTERCHANGEABLE
Elbow,pipe
4730-00-249-3882 INTERCHANGEABLE
Elbow,pipe
Cross-Reference Index
Part NumberManufacturer
WWP460CLASSA Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
4730-00-053-0266INTERCHANGEABLE
ELBOW,PIPE
4730-00-187-7648INTERCHANGEABLE
COUPLING,PIPE
4730-00-189-3042INTERCHANGEABLE
REDUCER,PIPE
4730-00-203-8350INTERCHANGEABLE
COUPLING,PIPE
4730-00-231-2386INTERCHANGEABLE
CAP,PIPE
4730-00-231-2400INTERCHANGEABLE
CAP,PIPE
4730-00-231-2407INTERCHANGEABLE
CAP,PIPE
4730-00-249-2065INTERCHANGEABLE
TEE,PIPE
4730-00-249-3875INTERCHANGEABLE
ELBOW,PIPE
4730-00-249-3882INTERCHANGEABLE
ELBOW,PIPE
4730-00-249-3895INTERCHANGEABLE
ELBOW,PIPE
4730-00-254-6238INTERCHANGEABLE
TEE,PIPE

Frequently Asked Questions

What is NSN 4730-00-189-3044?

NSN 4730-00-189-3044 is a Reducer,pipe, manufactured by Federal Specifications Promulgated by General Services Administration Washington DC, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-189-3044?

NSN 4730-00-189-3044 has 1 cross-referenced part number: WWP460CLASSA (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 4730-00-189-3044?

There are 12 known substitutes for 4730-00-189-3044: 4730-00-053-0266, 4730-00-187-7648, 4730-00-189-3042 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of WWP460CLASSA?

Key specifications for WWP460CLASSA: Reducer Type: CONCENTRIC; Material Document and Classification: ASTM B62 ASSN STD 1ST MATERIAL RESPONSE AND QQ-C-390 FED SPEC 2ND MATERIAL RESPONSE OVERALL; Maximum Operating Temp: 150.0 FAHRENHEIT SECOND RESPONSE DEGF; Connection Type: THREADED INTERNAL PIPE ALL ENDS. 27 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-189-3044 still in active supply?

NSN 4730-00-189-3044 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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