PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2388K76Reducer,pipe

Mcmaster-Carr Supply Co · NSN 4730-00-146-6857 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-146-6857 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-146-6857. Primary manufacturer part number: 2388K76.
Features
  • Reducer,pipe — FSC 4730
  • Pipe Wall Thickness Designation for Which Designed: SCHEDULE 40 ALL ENDS
  • Material Document and Classification: ASTM D1784,TY 1,GR1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Material: PLASTIC OVERALL
  • Nominal Pipe Size Accommodated: 3.000 INCHES SECOND END IN
  • Reducer Type: CONCENTRIC
  • Nominal Pipe Size Accommodated: 4.000 INCHES FIRST END IN
  • Connection Style: SOCKET (PIPE) ALL ENDS
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Plastic Overall construction
General Description

The Reducer,pipe, cataloged under National Stock Number 4730-00-146-6857, 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 Mcmaster-Carr Supply Co. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 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
NSN4730-00-146-6857
Primary Part Number2388K76
Item NameReducer,pipe
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerMcmaster-Carr Supply Co
StatusACTIVE
Pipe Wall Thickness Designation for Which DesignedSCHEDULE 40 ALL ENDS
Material Document and ClassificationASTM D1784,TY 1,GR1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MaterialPLASTIC OVERALL
Nominal Pipe Size Accommodated3.000 INCHES SECOND END IN
Reducer TypeCONCENTRIC
Nominal Pipe Size Accommodated4.000 INCHES FIRST END IN
Connection StyleSOCKET (PIPE) ALL ENDS
Nominal Overall Length4.188 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5330-00-059-8763 INTERCHANGEABLE
Seal
5961-00-112-09321853-0026 INTERCHANGEABLE
Transistor
Keysight Technologies Inc
3030-00-528-4532 INTERCHANGEABLE
Belt,v
5331-00-724-35113026 INTERCHANGEABLE
O-Ring
Husco International Inc
3120-00-756-5686 INTERCHANGEABLE
Bearing,coupling Shaft
6550-01-063-2945 INTERCHANGEABLE
Test Kit,neisseria Gonorrhea Det
5120-01-162-9467 INTERCHANGEABLE
Socket,socket Wrench
5330-01-287-71583026 INTERCHANGEABLE
Seal
Stewart & Stevenson Power Products Llc
5360-01-304-36063026 INTERCHANGEABLE
Spring,helical,compression
Lawler Manufacturing Company, Inc.
5365-01-345-1005 INTERCHANGEABLE
Spacer,plate
Cross-Reference Index
Part NumberManufacturer
2388K76 Mcmaster-Carr Supply Co (USA)
ASTM D 2466 American Society for Testing and Materials Dba Astm International (USA)
3026 George Fischer Sloane, Inc. (USA)
LP320 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
ASTM D2665 American Society for Testing and Materials Dba Astm International (USA)
Related Parts
5330-00-059-8763INTERCHANGEABLE
SEAL
5961-00-112-0932INTERCHANGEABLE
TRANSISTOR
1853-0026
3030-00-528-4532INTERCHANGEABLE
BELT,V
5331-00-724-3511INTERCHANGEABLE
O-RING
3026
3120-00-756-5686INTERCHANGEABLE
BEARING,COUPLING SHAFT
6550-01-063-2945INTERCHANGEABLE
TEST KIT,NEISSERIA GONORRHEA DET
5120-01-162-9467INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5330-01-287-7158INTERCHANGEABLE
SEAL
3026
5360-01-304-3606INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
3026
5365-01-345-1005INTERCHANGEABLE
SPACER,PLATE
5120-01-351-8345INTERCHANGEABLE
PLIERS
3026
4720-01-360-2379INTERCHANGEABLE
HOSE,NONMETALLIC
GH793-6

Frequently Asked Questions

What is NSN 4730-00-146-6857?

NSN 4730-00-146-6857 is a Reducer,pipe, manufactured by Mcmaster-Carr Supply Co, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-146-6857?

NSN 4730-00-146-6857 has 5 cross-referenced part numbers: 2388K76 (Mcmaster-Carr Supply Co), ASTM D 2466 (American Society for Testing and Materials Dba Astm International), 3026 (George Fischer Sloane, Inc.), LP320 (Federal Specifications Promulgated by General Services Administration Washington DC), ASTM D2665 (American Society for Testing and Materials Dba Astm International).

What NSN replaces 4730-00-146-6857?

There are 12 known substitutes for 4730-00-146-6857: 5330-00-059-8763, 5961-00-112-0932, 3030-00-528-4532 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2388K76?

Key specifications for 2388K76: Pipe Wall Thickness Designation for Which Designed: SCHEDULE 40 ALL ENDS; Material Document and Classification: ASTM D1784,TY 1,GR1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Material: PLASTIC OVERALL; Nominal Pipe Size Accommodated: 3.000 INCHES SECOND END IN. 8 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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