PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B16 11-73Reducer,pipe

American National Standards Institute Incorporated Dba American National Standards Institute · NSN 4730-01-023-0825 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-023-0825 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-023-0825. Primary manufacturer part number: B16 11-73.
Features
  • Reducer,pipe — FSC 4730
  • Material: STEEL OVERALL
  • Connection Style: PLAIN (PIPE) SECOND END
  • Connection Type: UNTHREADED EXTERNAL PIPE SECOND END
  • Connection Style: SOCKET (PIPE) FIRST END
  • Nominal Pipe Size Accommodated: 2.000 INCHES SECOND END IN
  • Nominal Overall Length: 1.562 INCHES IN
  • Nominal Pipe Size Accommodated: 0.750 INCHES FIRST END IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Overall construction
General Description

The Reducer,pipe, cataloged under National Stock Number 4730-01-023-0825, 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 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-023-0825
Primary Part NumberB16 11-73
Item NameReducer,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerAmerican National Standards Institute Incorporated Dba American National Standards Institute
StatusACTIVE
MaterialSTEEL OVERALL
Connection StylePLAIN (PIPE) SECOND END
Connection TypeUNTHREADED EXTERNAL PIPE SECOND END
Connection StyleSOCKET (PIPE) FIRST END
Nominal Pipe Size Accommodated2.000 INCHES SECOND END IN
Nominal Overall Length1.562 INCHES IN
Nominal Pipe Size Accommodated0.750 INCHES FIRST END IN
Connection TypeUNTHREADED INTERNAL PIPE FIRST END
Reducer TypeCONCENTRIC
Pipe Wall Thickness Designation for Which DesignedSCHEDULE 80 FIRST END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
4730-00-595-3978 INTERCHANGEABLE
Elbow,pipe
4730-00-840-87241381-1 1-4IN INTERCHANGEABLE
Tee,pipe
Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy
4730-01-022-6010SW503-1-1/4X1/2 INTERCHANGEABLE
Reducer,pipe
Flowserve Inc
4730-01-022-60111390 1-1/4X3/4 INTERCHANGEABLE
Reducer,pipe
Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy
4730-01-022-76051390-2X1-1/4 INTERCHANGEABLE
Reducer,pipe
Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy
4730-01-023-7730 INTERCHANGEABLE
Union,pipe
Cross-Reference Index
Part NumberManufacturer
B16 11-73 PRIMARY American National Standards Institute Incorporated Dba American National Standards Institute (USA)
1390-2X3/4 Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy (USA)
ASME B16.11 American National Standards Institute Incorporated Dba American National Standards Institute (USA)
Related Parts
4730-00-595-3978INTERCHANGEABLE
ELBOW,PIPE
4730-00-840-8724INTERCHANGEABLE
TEE,PIPE
1381-1 1-4IN
4730-01-022-6010INTERCHANGEABLE
REDUCER,PIPE
SW503-1-1/4X1/2
4730-01-022-6011INTERCHANGEABLE
REDUCER,PIPE
1390 1-1/4X3/4
4730-01-022-7605INTERCHANGEABLE
REDUCER,PIPE
1390-2X1-1/4
4730-01-023-7730INTERCHANGEABLE
UNION,PIPE

Frequently Asked Questions

What is NSN 4730-01-023-0825?

NSN 4730-01-023-0825 is a Reducer,pipe, 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 4730-01-023-0825?

NSN 4730-01-023-0825 has 3 cross-referenced part numbers: B16 11-73 (American National Standards Institute Incorporated Dba American National Standards Institute), 1390-2X3/4 (Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy), ASME B16.11 (American National Standards Institute Incorporated Dba American National Standards Institute).

What NSN replaces 4730-01-023-0825?

There are 6 known substitutes for 4730-01-023-0825: 4730-00-595-3978, 4730-00-840-8724, 4730-01-022-6010 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B16 11-73?

Key specifications for B16 11-73: Material: STEEL OVERALL; Connection Style: PLAIN (PIPE) SECOND END; Connection Type: UNTHREADED EXTERNAL PIPE SECOND END; Connection Style: SOCKET (PIPE) FIRST END. 10 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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