Technical Specification: Direction: right Processed material: Steel
twist drill short version relieved cone rollforged
Size: 17,5 Total length: 191 Working length: 130
Drilling is a separation process to create round holes into a material through chip removal. A distinction is made between blind hole drillings and through hole drillings. A core hole must be bored to cut a thread into the hole. Core holes have specific sizes which correspond to the taps. You can find these sizes in each tap table as it’s absolutely necessary to stick to it.
Twist drills have a side rake angle (also called twist angle) of 27°, a point angle of 118° or 135° and a cylindrical shank. The finish “Type N” is suitable for normal cutting materials. A distinction is made between roll forged and fully ground twist drills.
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