Screw Machine Drill Bits

A screw machine drill bit, also known as a stub drill bit, is a type of short-length twist drill bit designed for use in screw machines and other machinery with limited space. These drill bits are characterized by their shorter length compared to standard jobber or jobber-length drill bits. Key characteristics of screw machine drill bits include: Short Length: Screw machine drill bits are typically much shorter than standard drill bits. This short length allows them to fit into tight spaces and machinery where longer drill bits would be impractical. Flute Design: They often have a reduced flute length compared to standard drill bits, which helps improve rigidity and prevents deflection when drilling in challenging materials. Point Angle: Screw machine drill bits typically have a standard point angle of around 118 degrees, making them suitable for general-purpose drilling tasks. Materials: Like other drill bits, screw machine drill bits are available in various materials, including high-speed steel (HSS), cobalt, and carbide, to suit different drilling applications and material types. These drill bits are commonly used in precision machining operations, such as in screw machines and CNC (Computer Numerical Control) machining centers, where space constraints and the need for accuracy are critical. Their short length and robust design make them suitable for drilling holes in metal, plastics, and other materials in confined spaces without sacrificing precision.