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The thread button bit, also known as a tap drill bit or a threading bit, is an essential component in the process of thread cutting. Its design incorporates a button-shaped projection at its end, which not only aids in the initial piercing of the material but also contributes to the accuracy and stability during the threading operation. The 'button' serves as a cutting edge, shearing off material as it rotates, gradually forming the required thread pattern.

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Button bits, named after their distinctive button-shaped carbide inserts, are primarily made from high-quality steel with tungsten carbide tips. The tungsten carbide buttons on the bit's surface provide exceptional wear resistance, enabling them to withstand the intense pressure and friction generated during drilling. The manufacturing process is intricate and demands precision engineering to ensure optimal performance and durability.

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