Step drill 14.0 / 10.2 HSS for M12 screw with cylindrical shank DIN 8378, ZPS
Product information
Czech metal step drill 14,0x10,2 mm for M12 screw
Step drill bit for thread and recessed 90 ° head screw
Overall length: 155mm
Screw length total / Front End: 105 / 30mm
Helix Angle: 25 ° to 30 °
Angle of Tip: 118 ° and 90 ° Form: A
HSS
DIN8378 / PN221258
Drill is sharpened to two diameters: 10.2mm and 14.0mm
Shank diameter: 10.2mm
Drilling requires lower cutting conditions than standard normatives for classical drills.
Usage:
Stepped drills with four facets are recommended for drilling screw holes and at the same time recesses for cylindrical screw heads in non-alloy and alloy steel and steel castings to a strength of 800 N / mm2, gray, tempered ductile cast iron, aluminum alloys, and the like.
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