PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A40-3TABLE5Reducer,tube

American National Standards Institute Incorporated Dba American National Standards Institute · NSN 4730-00-289-4852 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-289-4852 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-289-4852. Primary manufacturer part number: A40-3TABLE5.
Features
  • Reducer,tube — FSC 4730
  • Reducer Type: CONCENTRIC
  • Connection Type: UNTHREADED INTERNAL TUBE SECOND END
  • Tubing Wall Nominal Thickness for Which Designed: 0.750 INCHES SECOND END IN
  • Nominal Overall Length: 2.125 INCHES IN
  • Nominal Outside Diameter Tube Accommodated: 1.375 INCHES FIRST END IN
  • Connection Style: SOCKET (TUBE) FIRST END
  • Connection Type: UNTHREADED INTERNAL TUBE FIRST END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy Overall construction
General Description

The Reducer,tube, cataloged under National Stock Number 4730-00-289-4852, 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 American National Standards Institute Incorporated Dba American National Standards Institute. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-289-4852
Primary Part NumberA40-3TABLE5
Item NameReducer,tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerAmerican National Standards Institute Incorporated Dba American National Standards Institute
StatusACTIVE
Reducer TypeCONCENTRIC
Connection TypeUNTHREADED INTERNAL TUBE SECOND END
Tubing Wall Nominal Thickness for Which Designed0.750 INCHES SECOND END IN
Nominal Overall Length2.125 INCHES IN
Nominal Outside Diameter Tube Accommodated1.375 INCHES FIRST END IN
Connection StyleSOCKET (TUBE) FIRST END
Connection TypeUNTHREADED INTERNAL TUBE FIRST END
Connection StyleSOCKET (TUBE) SECOND END
Tubing Wall Nominal Thickness for Which Designed0.055 INCHES FIRST END IN
Nominal Outside Diameter Tube Accommodated0.875 INCHES SECOND END IN
MaterialCOPPER ALLOY OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
4730-00-289-4825 INTERCHANGEABLE
Coupling,tube
4730-00-995-9667W1037 INTERCHANGEABLE
Reducer,tube
Mueller Brass Co.
Cross-Reference Index
Part NumberManufacturer
A40-3TABLE5 PRIMARY American National Standards Institute Incorporated Dba American National Standards Institute (USA)
75431A PRIMARY Air Products & Chemicals, Inc (USA)
Related Parts
4730-00-289-4825INTERCHANGEABLE
COUPLING,TUBE
4730-00-995-9667INTERCHANGEABLE
REDUCER,TUBE
W1037

Frequently Asked Questions

What is NSN 4730-00-289-4852?

NSN 4730-00-289-4852 is a Reducer,tube, manufactured by American National Standards Institute Incorporated Dba American National Standards Institute, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-289-4852?

NSN 4730-00-289-4852 has 2 cross-referenced part numbers: A40-3TABLE5 (American National Standards Institute Incorporated Dba American National Standards Institute), 75431A (Air Products & Chemicals, Inc).

What NSN replaces 4730-00-289-4852?

There are 2 known substitutes for 4730-00-289-4852: 4730-00-289-4825, 4730-00-995-9667. Verify interchangeability with system specifications before substitution.

What are the specifications of A40-3TABLE5?

Key specifications for A40-3TABLE5: Reducer Type: CONCENTRIC; Connection Type: UNTHREADED INTERNAL TUBE SECOND END; Tubing Wall Nominal Thickness for Which Designed: 0.750 INCHES SECOND END IN; Nominal Overall Length: 2.125 INCHES IN. 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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