Step drill 28.0 / 17.0 HSS for M16 screw with taper shank ČSN 221255, StimZet
Product information
Czech metal step drill bit 28,0x17,0 mm for screw M16
Step drill bit for shaft and recessed head screw 90 °
Overall length: 291mm
Screw length total / front: 170 / 35mm
Morse cone: MK3
Helix Angle: 25 ° to 30 °
Angle of Tip: 118 ° and 90 ° Form: A
Material: HSS
Standard: CSN221255
Drill is sharpened to two diameters: 17.0mm and 28.0mm
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, etc.
Cat. no .: K552800F000S
If you need a different size, see the enclosed photographs - see the DIN8375 catalog sheet - for German screws.
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Jakub Novák, Orders
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