HM thread or “T” thread has a larger pitch and a larger angle of profile.
Excellent wear properties and good coupling qualities.
It is ideal for extension drilling with multiple steel.
Compatible with heavy high torque rock drills for surface and underground applications.

Available sizes
T40/16 x 3m
T40/20 x 3m
T76 x 3m
T103/78 x 3m
T103/83 x 3m