PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B166-42Adapter,straight,pipe to Tube

Coronet Parts Mfg Co Inc · NSN 4730-00-352-9793 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-352-9793 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-352-9793. Primary manufacturer part number: B166-42.
Features
  • Adapter,straight,pipe to Tube — FSC 4730
  • Nominal Thread Size: 0.438 INCHES FIRST END IN
  • Nominal Outside Diameter Tube Accommodated: 0.250 INCHES FIRST END IN
  • Thread Series Designator: NPTF SECOND END
  • Thread Class: 2A FIRST END A
  • Nondefinitive Spec/std Data: 1C FIGURE
  • Connection Style: PLAIN (PIPE) SECOND END
  • Specification/standard Data: 81343-J246 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy Overall construction
General Description

The Adapter,straight,pipe to Tube, cataloged under National Stock Number 4730-00-352-9793, 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 Coronet Parts Mfg Co Inc. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 23 commercial cross-references from 16 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-352-9793
Primary Part NumberB166-42
Item NameAdapter,straight,pipe to Tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerCoronet Parts Mfg Co Inc
StatusCANCELLED
Nominal Thread Size0.438 INCHES FIRST END IN
Nominal Outside Diameter Tube Accommodated0.250 INCHES FIRST END IN
Thread Series DesignatorNPTF SECOND END
Thread Class2A FIRST END A
Nondefinitive Spec/std Data1C FIGURE
Connection StylePLAIN (PIPE) SECOND END
Specification/standard Data81343-J246 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Nominal Overall Length0.850 INCHES IN
Seat Angle12.0 DEGREES FIRST END
Connection StyleFLARELESS (TUBE) FIRST END
Connection TypeTHREADED EXTERNAL TUBE FIRST END
Furnished Items and Quantity1 TUBE COUPLING NUT W/SLEEVE
Thread Quantity Per Inch24 FIRST END
MaterialCOPPER ALLOY OVERALL
Nominal Thread Size0.125 INCHES SECOND END IN
Connection TypeTHREADED EXTERNAL PIPE SECOND END
Thread Series DesignatorUNS FIRST END
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5935-00-201-8959205-101 INTERCHANGEABLE
Jack,tip
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
5985-00-270-4509128C539H07 INTERCHANGEABLE
Attenuator,fixed
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
5325-00-282-7125 INTERCHANGEABLE
Ring,retaining
5950-00-645-6375S0C62537 INTERCHANGEABLE
Transformer,audio Frequency
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
8475-00-671-47331009-18 INTERCHANGEABLE
Drawers
Naval Air Warfare Center Aircraft Division Joint Base Jbmdl
1680-00-773-3028100918 INTERCHANGEABLE
Piston Rod Assembly
Tactair Fluid Controls Inc
5325-00-779-9176100918 INTERCHANGEABLE
Grommet,nonmetallic
Honeywell International Inc Dba Honeywell Div Consumer Products Group
5330-00-815-0384100918 INTERCHANGEABLE
Gasket
Cummins Inc.
4730-00-921-3240SAE J246 4-2 120202BA INTERCHANGEABLE
Elbow,pipe to Tube
Sae International Dba Sae International
1680-00-979-665420510-1 INTERCHANGEABLE
Shaft,actuator
Safran Electronics & Defense, Avionics Usa, Llc Dba Use CAGE Code 879b2 for Cataloging
Cross-Reference Index
Part NumberManufacturer
166F1-4BY1-8 Imperial (USA)
100918 Terex Corp (USA)
B166-42 PRIMARY Coronet Parts Mfg Co Inc (USA)
AC366 Lift Parts Mfg Co Inc Div of Echlin Mfg Co the (USA)
4-2 120103BA Society of Automotive Engineers Inc (USA)
J246 Sae International Dba Sae International (USA)
205101 Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems (USA)
J246 Society of Automotive Engineers Inc (USA)
4-2 120103BA PRIMARY Sae International Dba Sae International (USA)
66AB-4-2 Parker-Hannifin Corp Div Fluid System Connector Division (USA)
MS39181-1 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
9100918 PRIMARY General Motors Corp (USA)
R5047 American Standard Inc Westinghouse Air Brake Co Div (USA)
13950HX Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/ (USA)
1-WBD-9443 Volvo Trucks North America, Inc. Dba (foreign Parent Is Volvo Lastvagnar Ab, Goteborg, Sweden.) (USA)
166F1-4X1-8 Imperial (USA)
466F1-4X1-8 Imperial (USA)
13950HX Komatsu America Corp. (USA)
AC366 Federal Mogul Corp Sub Wagner Brake Moog Automotive Div (USA)
AC796 Federal Mogul Corp Sub Wagner Brake Moog Automotive Div (USA)
Related Parts
5935-00-201-8959INTERCHANGEABLE
JACK,TIP
205-101
5985-00-270-4509INTERCHANGEABLE
ATTENUATOR,FIXED
128C539H07
5325-00-282-7125INTERCHANGEABLE
RING,RETAINING
5950-00-645-6375INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
S0C62537
8475-00-671-4733INTERCHANGEABLE
DRAWERS
1009-18
1680-00-773-3028INTERCHANGEABLE
PISTON ROD ASSEMBLY
100918
5325-00-779-9176INTERCHANGEABLE
GROMMET,NONMETALLIC
100918
5330-00-815-0384INTERCHANGEABLE
GASKET
100918
4730-00-921-3240INTERCHANGEABLE
ELBOW,PIPE TO TUBE
SAE J246 4-2 120202BA
1680-00-979-6654INTERCHANGEABLE
SHAFT,ACTUATOR
20510-1
5950-01-008-2499INTERCHANGEABLE
COIL,RADIO FREQUENCY
989112-5B
5970-01-100-9616INTERCHANGEABLE
INSULATOR,PLATE
60-11-4305-1678

Frequently Asked Questions

What is NSN 4730-00-352-9793?

NSN 4730-00-352-9793 is a Adapter,straight,pipe to Tube, manufactured by Coronet Parts Mfg Co Inc, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-352-9793?

NSN 4730-00-352-9793 has 23 cross-referenced part numbers: 166F1-4BY1-8 (Imperial), 100918 (Terex Corp), B166-42 (Coronet Parts Mfg Co Inc), AC366 (Lift Parts Mfg Co Inc Div of Echlin Mfg Co the), 4-2 120103BA (Society of Automotive Engineers Inc) and 18 more.

What NSN replaces 4730-00-352-9793?

There are 12 known substitutes for 4730-00-352-9793: 5935-00-201-8959, 5985-00-270-4509, 5325-00-282-7125 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of B166-42?

Key specifications for B166-42: Nominal Thread Size: 0.438 INCHES FIRST END IN; Nominal Outside Diameter Tube Accommodated: 0.250 INCHES FIRST END IN; Thread Series Designator: NPTF SECOND END; Thread Class: 2A FIRST END A. 17 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-352-9793 still in active supply?

NSN 4730-00-352-9793 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com