PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

66C-6-4Adapter,straight,pipe to Tube

Parker-Hannifin Corp Div Fluid System Connector Division · NSN 4730-00-430-5585 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-430-5585 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-430-5585. Primary manufacturer part number: 66C-6-4.
Features
  • Adapter,straight,pipe to Tube — FSC 4730
  • Thread Series Designator: UNEF FIRST END
  • Connection Type: THREADED EXTERNAL TUBE FIRST END
  • Connection Style: COMPRESSION (TUBE) FIRST END
  • Nominal Overall Length: 1.062 INCHES IN
  • Seat Nominal Radius: 0.062 INCHES FIRST END IN
  • Nominal Outside Diameter Tube Accommodated: 0.375 INCHES FIRST END IN
  • Nominal Thread Size: 0.562 INCHES FIRST END IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy 360 or Copper Alloy 345 Overall construction
General Description

The Adapter,straight,pipe to Tube, cataloged under National Stock Number 4730-00-430-5585, 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 Parker-Hannifin Corp Div Fluid System Connector Division. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 15 commercial cross-references from 10 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-430-5585
Primary Part Number66C-6-4
Item NameAdapter,straight,pipe to Tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerParker-Hannifin Corp Div Fluid System Connector Division
StatusCANCELLED
Thread Series DesignatorUNEF FIRST END
Connection TypeTHREADED EXTERNAL TUBE FIRST END
Connection StyleCOMPRESSION (TUBE) FIRST END
Nominal Overall Length1.062 INCHES IN
Seat Nominal Radius0.062 INCHES FIRST END IN
Nominal Outside Diameter Tube Accommodated0.375 INCHES FIRST END IN
Nominal Thread Size0.562 INCHES FIRST END IN
Nominal Thread Size0.250 INCHES SECOND END IN
Nondefinitive Spec/std Data12C FIGURE
MaterialCOPPER ALLOY 360 OR COPPER ALLOY 345 OVERALL
Specification/standard Data81343-J512 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
Thread Class2A FIRST END A
Thread Series DesignatorNPTF SECOND END
Furnished Items and Quantity1 SHORT COUPLING NUT WITH SLEEVE
Connection StylePLAIN (PIPE) SECOND END
Connection TypeTHREADED INTERNAL PIPE SECOND END
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
5905-00-258-6788667201-011 INTERCHANGEABLE
Resistor,voltage Sensitive
Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc
Cross-Reference Index
Part NumberManufacturer
19KP204 Oshkosh Defense Llc (USA)
66C-6-4 PRIMARY Parker-Hannifin Corp Div Fluid System Connector Division (USA)
66X6 Dana Corp Weatherhead Div (USA)
66CA-6-4 Mcnaughton Dynamics Limited (GBR)
SAE-J512 Sae International Dba Sae International (USA)
J512 Society of Automotive Engineers Inc (USA)
66X6 PRIMARY Danfoss Power Solutions II, Llc (USA)
66CA-6-4 Parker-Hannifin Corp Div Fluid System Connector Division (USA)
J512 Sae International Dba Sae International (USA)
19KP204 Oshkosh Corp (USA)
6-4 060103BA Society of Automotive Engineers Inc (USA)
SAE J512 6-4 060103BA PRIMARY Sae International Dba Sae International (USA)
66-F-06-04 Imperial (USA)
6-4 060103BA Sae International Dba Sae International (USA)
E266X6 Essex Brass Corporation (USA)
Related Parts
5905-00-258-6788INTERCHANGEABLE
RESISTOR,VOLTAGE SENSITIVE
667201-011

Frequently Asked Questions

What is NSN 4730-00-430-5585?

NSN 4730-00-430-5585 is a Adapter,straight,pipe to Tube, manufactured by Parker-Hannifin Corp Div Fluid System Connector Division, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-430-5585?

NSN 4730-00-430-5585 has 15 cross-referenced part numbers: 19KP204 (Oshkosh Defense Llc), 66C-6-4 (Parker-Hannifin Corp Div Fluid System Connector Division), 66X6 (Dana Corp Weatherhead Div), 66CA-6-4 (Mcnaughton Dynamics Limited), SAE-J512 (Sae International Dba Sae International) and 10 more.

What NSN replaces 4730-00-430-5585?

There is 1 known substitute for 4730-00-430-5585: 5905-00-258-6788. Verify interchangeability with system specifications before substitution.

What are the specifications of 66C-6-4?

Key specifications for 66C-6-4: Thread Series Designator: UNEF FIRST END; Connection Type: THREADED EXTERNAL TUBE FIRST END; Connection Style: COMPRESSION (TUBE) FIRST END; Nominal Overall Length: 1.062 INCHES IN. 17 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-430-5585 still in active supply?

NSN 4730-00-430-5585 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.
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