PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

D2665Reducer,pipe

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 4730-00-476-7126 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-476-7126 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-476-7126. Primary manufacturer part number: D2665.
Features
  • Reducer,pipe — FSC 4730
  • Nondefinitive Spec/std Data: 1 TYPE
  • Pipe Wall Thickness Designation for Which Designed: SCHEDULE 40 FIRST END
  • Material Document and Classification: ASTM D1784,TY 1,GR1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Nominal Pipe Size Accommodated: 3.000 INCHES FIRST END IN
  • Connection Style: SOCKET (PIPE) SECOND END
  • Connection Style: SOCKET (PIPE) FIRST END
  • Pipe Wall Thickness Designation for Which Designed: SCHEDULE 40 SECOND END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Plastic Overall construction
General Description

The Reducer,pipe, cataloged under National Stock Number 4730-00-476-7126, 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 13 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-476-7126
Primary Part NumberD2665
Item NameReducer,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusACTIVE
Nondefinitive Spec/std Data1 TYPE
Pipe Wall Thickness Designation for Which DesignedSCHEDULE 40 FIRST END
Material Document and ClassificationASTM D1784,TY 1,GR1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Nominal Pipe Size Accommodated3.000 INCHES FIRST END IN
Connection StyleSOCKET (PIPE) SECOND END
Connection StyleSOCKET (PIPE) FIRST END
Pipe Wall Thickness Designation for Which DesignedSCHEDULE 40 SECOND END
Reducer TypeCONCENTRIC
Nominal Overall Length3.282 INCHES IN
Connection TypeUNTHREADED INTERNAL PIPE FIRST END
MaterialPLASTIC OVERALL
Connection TypeUNTHREADED INTERNAL PIPE SECOND END
Nominal Pipe Size Accommodated1.500 INCHES SECOND END IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4730-00-163-444612309011 INTERCHANGEABLE
Lateral,drainage Pipe
Nibco Inc Chemtrol Div
4730-00-361-2356 INTERCHANGEABLE
Elbow,pipe
4730-00-472-5066 INTERCHANGEABLE
Coupling,pipe
4730-00-472-50702824-040 INTERCHANGEABLE
Plug,pipe
Ryan Herco Products Corp
4730-00-472-5071 INTERCHANGEABLE
Elbow,pipe
4730-00-472-5072D2665 INTERCHANGEABLE
Elbow,pipe
American Society for Testing and Materials Dba Astm International
4730-00-475-8803 INTERCHANGEABLE
Elbow,pipe
4730-00-479-0098 INTERCHANGEABLE
Elbow,pipe
4730-01-008-8695TABLE 21, 3 INCH INTERCHANGEABLE
Trap,drainage Pipe
American Society for Testing and Materials Dba Astm International
4730-01-030-9194 INTERCHANGEABLE
Coupling,pipe
Cross-Reference Index
Part NumberManufacturer
D2665 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
3023 George Fischer Sloane, Inc. (USA)
LP320 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
1021 1 1-2X3 Charlotte Supply Co (USA)
2389K74 Mcmaster-Carr Supply Co (USA)
437-337 George Fischer Sloane, Inc. (USA)
Related Parts
4730-00-163-4446INTERCHANGEABLE
LATERAL,DRAINAGE PIPE
12309011
4730-00-361-2356INTERCHANGEABLE
ELBOW,PIPE
4730-00-472-5066INTERCHANGEABLE
COUPLING,PIPE
4730-00-472-5070INTERCHANGEABLE
PLUG,PIPE
2824-040
4730-00-472-5071INTERCHANGEABLE
ELBOW,PIPE
4730-00-472-5072INTERCHANGEABLE
ELBOW,PIPE
D2665
4730-00-475-8803INTERCHANGEABLE
ELBOW,PIPE
4730-00-479-0098INTERCHANGEABLE
ELBOW,PIPE
4730-01-008-8695INTERCHANGEABLE
TRAP,DRAINAGE PIPE
TABLE 21, 3 INCH
4730-01-030-9194INTERCHANGEABLE
COUPLING,PIPE
4730-01-098-0825INTERCHANGEABLE
ELBOW,PIPE
2452
4730-01-100-2126INTERCHANGEABLE
COUPLING,DRAINAGE PIPE

Frequently Asked Questions

What is NSN 4730-00-476-7126?

NSN 4730-00-476-7126 is a Reducer,pipe, manufactured by Federal Specifications Promulgated by General Services Administration Washington DC, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-476-7126?

NSN 4730-00-476-7126 has 6 cross-referenced part numbers: D2665 (Federal Specifications Promulgated by General Services Administration Washington DC), 3023 (George Fischer Sloane, Inc.), LP320 (Federal Specifications Promulgated by General Services Administration Washington DC), 1021 1 1-2X3 (Charlotte Supply Co), 2389K74 (Mcmaster-Carr Supply Co) and 1 more.

What NSN replaces 4730-00-476-7126?

There are 12 known substitutes for 4730-00-476-7126: 4730-00-163-4446, 4730-00-361-2356, 4730-00-472-5066 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of D2665?

Key specifications for D2665: Nondefinitive Spec/std Data: 1 TYPE; Pipe Wall Thickness Designation for Which Designed: SCHEDULE 40 FIRST END; Material Document and Classification: ASTM D1784,TY 1,GR1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Nominal Pipe Size Accommodated: 3.000 INCHES FIRST END IN. 13 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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