A technical drawing of a 15° Helical thread mill with dimensional callouts

Metric Multitooth 15° Helical

Designed for high-performance internal threading, our Metric Multitooth 15° Helical Thread Mills deliver precision and efficiency in every cut. The 15° helix angle promotes smooth cutting action and reduced vibration, while coolant to each flute ensures optimal chip evacuation and extended tool life. Made from premium submicron grade carbide for superior wear resistance, these tools are available uncoated or with AlTiN⁺ coating for higher cutting speeds in demanding applications. Ideal for internal threads only, they offer reliability and consistency in metric threading operations.

Minimum ID Thread/Pitch
A (Tool Diameter)
B (Length of Cut)
Q (Length)S (Shank Diameter)OALFlutesUncoated Tool #Uncoated EDP #AlTiN+ EDP #
M5.0-.80.1180.3280.0146MM58MM3TMI5.0-0.80-H100704100722
M6.0-10.1690.4880.0186MM58MM3TMI6.0-1.00-H100707100725
M8.0-.750.2340.6320.0136MM58MM3TMI8.0-0.75-H100710100728
M8.0-10.2340.6460.0186MM58MM3TMI8.0-1.00-H100713100731
M8.0-1.250.2340.6590.0226MM58MM3TMI8.0-1.25-H100716100734
M10-1.50.3000.7900.0278MM75MM4TMI10-1.50-H103153103156
M12-10.3600.8810.01810MM100MM4TMI12-1.00-H103117103126
M12-1.750.3600.9230.03110MM100MM4TMI12-1.75-H103120103129
M14-1.50.3700.9090.02710MM100MM4TMI14-1.50-H103123103132
M16-20.4701.2900.03512MM100MM4TMI16-2.00-H103135103144
M18-1.50.4701.2630.02712MM100MM4TMI18-1.50-H103138103147
M20-2.50.4701.3180.04412MM100MM4TMI20-2.50-H103141103150