PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SW503-1-1/4X1/2Reducer,pipe

Flowserve Inc · NSN 4730-01-022-6010 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-022-6010 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-022-6010. Primary manufacturer part number: SW503-1-1/4X1/2.
Features
  • Reducer,pipe — FSC 4730
  • Connection Type: UNTHREADED EXTERNAL PIPE SECOND END
  • Material: STEEL OVERALL
  • Nominal Overall Length: 1.375 INCHES IN
  • Reducer Type: CONCENTRIC
  • Connection Style: SOCKET (PIPE) FIRST END
  • Connection Style: PLAIN (PIPE) SECOND END
  • Connection Type: UNTHREADED INTERNAL PIPE FIRST END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Overall construction
General Description

The Reducer,pipe, cataloged under National Stock Number 4730-01-022-6010, 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 Flowserve Inc. 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-022-6010
Primary Part NumberSW503-1-1/4X1/2
Item NameReducer,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerFlowserve Inc
StatusACTIVE
Connection TypeUNTHREADED EXTERNAL PIPE SECOND END
MaterialSTEEL OVERALL
Nominal Overall Length1.375 INCHES IN
Reducer TypeCONCENTRIC
Connection StyleSOCKET (PIPE) FIRST END
Connection StylePLAIN (PIPE) SECOND END
Connection TypeUNTHREADED INTERNAL PIPE FIRST END
Material Document and ClassificationASTM A181 GRADE 1 OR A105 GRADE2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Pipe Wall Thickness Designation for Which DesignedSCHEDULE 80 FIRST END
Nominal Pipe Size Accommodated1.250 INCHES SECOND END IN
Nominal Pipe Size Accommodated0.500 INCHES FIRST END IN
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
4730-01-022-60111390 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
4730-01-023-0825B16 11-73 INTERCHANGEABLE
Reducer,pipe
American National Standards Institute Incorporated Dba American National Standards Institute
4730-01-023-7730 INTERCHANGEABLE
Union,pipe
Cross-Reference Index
Part NumberManufacturer
B16-11-73 American National Standards Institute Incorporated Dba American National Standards Institute (USA)
1390 1-1-4X1-2 Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy (USA)
SW503-1-1/4X1/2 PRIMARY Flowserve Inc (USA)
Related Parts
4730-00-595-3978INTERCHANGEABLE
ELBOW,PIPE
4730-00-840-8724INTERCHANGEABLE
TEE,PIPE
1381-1 1-4IN
4730-01-022-6011INTERCHANGEABLE
REDUCER,PIPE
1390 1-1/4X3/4
4730-01-022-7605INTERCHANGEABLE
REDUCER,PIPE
1390-2X1-1/4
4730-01-023-0825INTERCHANGEABLE
REDUCER,PIPE
B16 11-73
4730-01-023-7730INTERCHANGEABLE
UNION,PIPE

Frequently Asked Questions

What is NSN 4730-01-022-6010?

NSN 4730-01-022-6010 is a Reducer,pipe, manufactured by Flowserve Inc, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-022-6010?

NSN 4730-01-022-6010 has 3 cross-referenced part numbers: B16-11-73 (American National Standards Institute Incorporated Dba American National Standards Institute), 1390 1-1-4X1-2 (Ati Ladish Llc Dba Ati Wah Chang Div Ati Forged Products - Cudahy), SW503-1-1/4X1/2 (Flowserve Inc).

What NSN replaces 4730-01-022-6010?

There are 6 known substitutes for 4730-01-022-6010: 4730-00-595-3978, 4730-00-840-8724, 4730-01-022-6011 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of SW503-1-1/4X1/2?

Key specifications for SW503-1-1/4X1/2: Connection Type: UNTHREADED EXTERNAL PIPE SECOND END; Material: STEEL OVERALL; Nominal Overall Length: 1.375 INCHES IN; Reducer Type: CONCENTRIC. 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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