Spiral Flute Taps, Thread Size (Inch): 1/4-20 , Thread Standard: UNC , Chamfer: Bottoming , Material: HSS-E-PM , Coating/Finish: HL MPN:10139103

Spiral flute taps are cutting tools used to create screw threads in metal components with a Unified National Coarse (UNC) thread pitch. Made from high-speed steel with electric physical vapor deposition (EPVD) for added hardness and wear resistance, these taps feature a bottoming chamfer that ensures proper seating of the screw in finished applications. With a 1/4 to 20 threads per inch (TPI) size range, they are suitable for producing fine threads on thin materials such as aluminum or brass. Additionally, their spiral flutes allow for efficient chip evacuation and cooler running temperatures during tapping operations. Overall, spiral flute taps serve essential roles in metalworking, machining, and tooling industries where producing precise threads with ease is paramount.