PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AMSE B16.3Reducer,pipe

The American Society of Mechanical Engineers · NSN 4730-00-288-8466 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-288-8466 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-288-8466. Primary manufacturer part number: AMSE B16.3.
Features
  • Reducer,pipe — FSC 4730
  • Nominal Thread Size: 1.250 INCHES FIRST END IN
  • Connection Style: PLAIN (PIPE) ALL ENDS
  • Media for Which Designed: STEAM FIRST RESPONSE
  • Connection Type: THREADED INTERNAL PIPE ALL ENDS
  • Nominal Thread Size: 0.500 INCHES SECOND END IN
  • Operating Pressure: 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS
  • Nominal Overall Length: 2.060 INCHES IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Iron Malleable Overall construction
General Description

The Reducer,pipe, cataloged under National Stock Number 4730-00-288-8466, 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 The American Society of Mechanical Engineers. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-288-8466
Primary Part NumberAMSE B16.3
Item NameReducer,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerThe American Society of Mechanical Engineers
StatusCANCELLED
Nominal Thread Size1.250 INCHES FIRST END IN
Connection StylePLAIN (PIPE) ALL ENDS
Media for Which DesignedSTEAM FIRST RESPONSE
Connection TypeTHREADED INTERNAL PIPE ALL ENDS
Nominal Thread Size0.500 INCHES SECOND END IN
Operating Pressure300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS
Nominal Overall Length2.060 INCHES IN
Thread Series DesignatorNPT ALL ENDS
Surface TreatmentZINC OR CADMIUM OVERALL
Media for Which DesignedFLUID THIRD RESPONSE
Surface Treatment Document and ClassificationQQ-Z-325,TY 1,CL 2 FED SPEC 1ST TREATMENT RESPONSE OVERALL
Nondefinitive Spec/std Data2 TYPE AND 8 TABLE
MaterialIRON MALLEABLE OVERALL
Material Document and ClassificationASTM A197 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Media for Which DesignedWATER-OIL-GAS SECOND RESPONSE
Specification/standard Data81348-WW-P-521 GOVERNMENT SPECIFICATION
Operating Pressure150.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM FIRST RESPONSE LBS
Reducer TypeCONCENTRIC
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
4730-00-289-3028120284 INTERCHANGEABLE
Elbow,pipe
Chrysler Realty Company Llc Dba Daimler Chrysler
Cross-Reference Index
Part NumberManufacturer
AMSE B16.3 The American Society of Mechanical Engineers (USA)
MS39232-37 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
B16.3 American National Standards Institute Incorporated Dba American National Standards Institute (USA)
WWP521BTYPE1 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
WWP521 1-2INCHFEMALE Federal Specifications Promulgated by General Services Administration Washington DC (USA)
WWP521 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
4730-00-289-3028INTERCHANGEABLE
ELBOW,PIPE
120284

Frequently Asked Questions

What is NSN 4730-00-288-8466?

NSN 4730-00-288-8466 is a Reducer,pipe, manufactured by The American Society of Mechanical Engineers, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-288-8466?

NSN 4730-00-288-8466 has 6 cross-referenced part numbers: AMSE B16.3 (The American Society of Mechanical Engineers), MS39232-37 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), B16.3 (American National Standards Institute Incorporated Dba American National Standards Institute), WWP521BTYPE1 (Federal Specifications Promulgated by General Services Administration Washington DC), WWP521 1-2INCHFEMALE (Federal Specifications Promulgated by General Services Administration Washington DC) and 1 more.

What NSN replaces 4730-00-288-8466?

There is 1 known substitute for 4730-00-288-8466: 4730-00-289-3028. Verify interchangeability with system specifications before substitution.

What are the specifications of AMSE B16.3?

Key specifications for AMSE B16.3: Nominal Thread Size: 1.250 INCHES FIRST END IN; Connection Style: PLAIN (PIPE) ALL ENDS; Media for Which Designed: STEAM FIRST RESPONSE; Connection Type: THREADED INTERNAL PIPE ALL ENDS. 18 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-288-8466 still in active supply?

NSN 4730-00-288-8466 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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