Metric Threads

Idex Metric Adapters

Idex Metric Threaded Adapters

Idex Metric Threaded Adapters are engineered to securely connect fittings with mismatched thread standards, enabling reliable transitions between English and Metric threaded geometries. Manufactured from stainless steel, PEEK, or Tefzelâ„¢ (ETFE), these adapters deliver excellent solvent resistance and dependable performance across a wide range of chromatography and laboratory fluidic applications.

Part No Threads Threads Thru-Hole Swept Vol. Pressure Rating
PEEK Adapters
P-626 10-32 Coned, Female M6 Flat Bottom, Female 0.020" (0.50) 0.3 µL 1,000 PSI (69 bar)
P-650 M6 Flat Bottom, Female, Standard 10-32 Coned, Male 0.030" (0.75) 6.7 µL 1,000 PSI (69 bar)
P-920-01 10-32 Coned, Female M6 Flat Bottom, Male 0.040" (1.00) 8.0 µL 1,000 PSI (69 bar)
PCTFE Adapters
P-670 M6 Flat Bottom, Female 1/4-28 Flat Bottom, Male 0.030" (0.75) 2.6 µL 1,000 PSI (69 bar)
P-673 5/16-24 Flat Bottom, Female M6 Flat Bottom, Male 0.040" (1.00) 9.9 µL 1,000 PSI (69 bar)
P-694 1/4-28 Flat Bottom, Female M6 Flat Bottom, Male 0.040" (1.00) 11.3 µL 1,000 PSI (69 bar)
Stainless Steel Adapters
1587 10-32 Coned, Female M6 Flat Bottom, Male 0.040" (1.00) 0.68 µL N/A*
* The pressure ratings of these adapters exceed the pressure-holding ability of the fittings and tubing used with them.

Key Definitions â–¸
Metric Threaded Adapter
A fluidic adapter designed to connect fittings with metric-threaded ports to components using different thread standards, ensuring secure and leak-free connections.
English-to-Metric Threads
A thread conversion interface that allows components with imperial (English) threads to mate with metric-threaded fittings commonly used in analytical and laboratory systems.
Flat-Bottom Thread
A thread style featuring a flat sealing surface at the base of the port, requiring a ferrule or gasket to create a proper seal.
Coned Thread
A thread geometry with a tapered internal cone that allows the ferrule to seal directly against the port, minimizing dead volume and improving pressure performance.
Zero Dead Volume (ZDV)
A connection characteristic indicating that no excess internal volume is introduced at the fitting interface, helping maintain peak shape and analytical accuracy.
Frequently Asked Questions â–¸
What are Idex Metric Threaded Adapters used for?
They are used to connect fittings with English (imperial) threads to metric-threaded ports, allowing compatibility between components with different thread standards.
What materials are available for Metric Threaded Adapters?
Idex Metric Threaded Adapters are manufactured from stainless steel, PEEK, and Tefzelâ„¢ (ETFE), providing options for high strength, bioinert performance, and broad chemical compatibility.
Are these adapters suitable for high-pressure chromatography applications?
Yes. Many Metric Threaded Adapters are designed to withstand the pressures commonly encountered in HPLC and UHPLC systems, depending on material selection and configuration.
Do Metric Threaded Adapters introduce dead volume into the flow path?
When properly selected and installed, these adapters are designed to minimize dead volume, helping preserve chromatographic efficiency and peak shape.