This high speed steel bottom tap features 3-56 thread specifications for precise threading applications in metalworking and machining operations.High Speed Steel Bottom Tap with 3-56 ThreadHigh speed steel construction for durability and heat resistanceBottom tap design for threading through holes3-56 thread specification for fine threading applicationsProfessional-grade machining toolIdeal for creating internal threads in metal parts repair work and precision manufacturing applications where reliable threading performance is essential.