Threaded connection bit (also known as threaded connection bit) is a kind of rock drilling tool, mainly used to drill holes in the rock. In the process of rock drilling, the drilling tool group composed of drill bit, drill rod, connecting sleeve and drill tail transmits the impact work of the rock drill, and the drill bit directly drills the rock.

Threaded drill bits are connected with drill rods by threads to transfer impact power and rotation torque for breaking rocks. With main threads of R22,R25,R28,R32,TR35,T38,T45,T51,ST58,ST68,EL60,EL68 and T60, the threaded drill bits are mainly used with hydraulic drill rigs and hydraulic rock drills in surface mining, underground mining, tunneling, bolting, furnace tapping, tunnel construction, hydropower projects, quarrying and construction.

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