Step drill 37.0 / 21.0 HSS for M20 screw with taper shank ČSN 221255, StimZet
Product information
Czech metal step drill bit 37,0x21,0 mm for M20 screw
Stepper drill for shaft holes and recessed 90 ° head screw
Overall length: 344mm
Screw length overall / front: 195 / 43mm
Morse cone: MK4
Helix Angle: 25 ° to 30 °
Angle of Tip: 118 ° and 90 °
Form: A
Material: HSS
Standard: CSN221255
Drill is sharpened to two diameters: 21.0mm and 37.0mm
Under drilling you need to choose 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, etc.
Cat. No .: K553700F000S
If you need a different size, see the enclosed photos - see the DIN8375 catalog sheet for German screws.
Stepper drill for shaft holes and recessed 90 ° head screw
Overall length: 344mm
Screw length overall / front: 195 / 43mm
Morse cone: MK4
Helix Angle: 25 ° to 30 °
Angle of Tip: 118 ° and 90 °
Form: A
Material: HSS
Standard: CSN221255
Drill is sharpened to two diameters: 21.0mm and 37.0mm
Under drilling you need to choose 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, etc.
Cat. No .: K553700F000S
If you need a different size, see the enclosed photos - see the DIN8375 catalog sheet for German screws.
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Jakub Novák, Orders
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