StimZet

Taper shank drills with a steep helix and a large core thickness with a special blade - they are less sensitive to breakage. Average: according to the selected variant Material: HSSCo8 Drill dimensions - see enclosed catalog sheet Helix angle: 10 ° - 15 ° Top angle: 128 ° Podbrus: Form C for drills pr. 10.0 - 40.0 mm and Form A for drills dia. 41.0 - 50.0 mm Production method: milling Standard: ZVSE 221146 Usage: For difficult to machine materials Hardox 450 and Hardox 500 Armored plates Drills have increased heat resistance

Drill with conical shank Average: according to the selected variant Material: HSSCo8 Drill dimensions - see enclosed catalog sheet Helix angle: 25 ° - 30 ° Top angle: 128 ° Podbrus: C Standard: 221148 / DIN 345 RN High-performance drill with increased heat resistance designed for drilling difficult-to-machine materials. Co8 drills have better heat resistance than Co5 drills. They are very hard, wear-resistant, but also very fragile! Require higher system rigidity: machine -> tool -> workpiece Usage: Steel with strength over 1200MPa Stainless steel Cast iron Aluminum and alloys Copper and alloys Heat-resistant steel HARDOX 400 and HARDOX 500

Quality Czech step drill for metal Step drill for holes for shank and Allen screw head 180 ° Helix angle: 25 ° to 30 ° Tip angle: 118 ° and 180 ° Form: A Material: HSS Standard: CSN221252 When drilling, lower cutting conditions than the standards for conventional drills must be selected. Usage: Step drills with four chamfers are recommended for drilling holes for screws and at the same time countersinking for cylindrical screw heads in components made of non-alloy and alloy steel and cast steel up to 800 N / mm2, gray, malleable and ductile cast iron, aluminum alloys, etc. If you need a different size, see the enclosed photos - see DIN8376 data sheet - for German screws.

Quality Czech step drill for metal Step drill for holes for shank and Allen screw head 180 ° Helix angle: 25 ° to 30 ° Tip angle: 118 ° and 180 ° Form: A Material: HSS Standard: CSN221253 When drilling, lower cutting conditions than the standards for conventional drills must be selected. Usage: Step drills with four chamfers are recommended for drilling holes for screws and at the same time countersinking for cylindrical screw heads in components made of non-alloy and alloy steel and cast steel up to 800 N / mm2, gray, malleable and ductile cast iron, aluminum alloys, etc. If you need a different size, see the enclosed photos - see DIN8377 data sheet - for German screws.

Quality Czech step drill for metal Step drill for holes for shank and countersunk screw head 90 ° Helix angle: 25 ° to 30 ° Tip angle: 118 ° and 90 ° Form: A Material: HSS Standard: CSN221255 When drilling, lower cutting conditions than the standards for conventional drills must be selected. Usage: Step drills with four chamfers are recommended for drilling holes for screws and at the same time countersinking for cylindrical screw heads in components made of non-alloy and alloy steel and cast steel up to 800 N / mm2, gray, malleable and ductile cast iron, aluminum alloys, etc. If you need a different size, see the enclosed photos - see DIN8375 data sheet - for German screws.

Quality Czech step drill for metal Step drill for thread holes and countersunk screw head 90 ° Helix angle: 25 ° to 30 ° Tip angle: 118 ° and 90 ° Form: A Material: HSS Standard: CSN221259 When drilling, lower cutting conditions than the standards for conventional drills must be selected. Usage: Step drills with four chamfers are recommended for drilling holes for screws and at the same time countersinking for cylindrical screw heads in components made of non-alloy and alloy steel and cast steel up to 800 N / mm2, gray, malleable and ductile cast iron, aluminum alloys, etc. If you need a different size, see the enclosed photos - see DIN8379 data sheet - for German screws.

Left-handed ground twist drill for steel with reinforced core and cylindrical shank Drill length: Classic middle series - lengths see enclosed catalog sheet Edge angle: 118 ° Helix angle: 25-30 ° Material: HSS - High speed steel Standard: DIN338 LN / PN 2914 / ČSN 221131 Usage: General - hand, stand, column drills Non-alloy and alloy steel, cast steel with strength up to 900 N / mm2 Gray malleable cast irons, ductile cast irons, sintered aluminum alloys, bronze

Quality Czech step drill for metal Step drill for holes for shank and countersunk screw head 90 ° Helix angle: 25 ° to 30 ° Tip angle: 118 ° and 90 ° Form: A Material: HSS Standard: PN221254 When drilling, lower cutting conditions than the standards for conventional drills must be selected. Usage: Step drills with four chamfers are recommended for drilling holes for screws and at the same time countersinking for cylindrical screw heads in components made of non-alloy and alloy steel and cast steel up to 800 N / mm2, gray, malleable and ductile cast iron, aluminum alloys, etc. If you need a different size, see the enclosed photos - see DIN8374 data sheet - for German screws.

Quality Czech step drill for metal Step drill for thread holes and countersunk screw head 90 ° Helix angle: 25 ° to 30 ° Tip angle: 118 ° and 90 ° Form: A Material: HSS Standard: PN221258 When drilling, lower cutting conditions than the standards for conventional drills must be selected. Usage: Step drills with four chamfers are recommended for drilling holes for screws and at the same time countersinking for cylindrical screw heads in components made of non-alloy and alloy steel and cast steel up to 800 N / mm2, gray, malleable and ductile cast iron, aluminum alloys, etc. If you need a different size, see the enclosed photos - see DIN8378 data sheet - for German screws.

Exrta long drill with taper shank, morse taper Average: according to the selected variant Overall length / helix: according to the selected variant Cone: see product description for individual variants Helix: 25 to 30 ° Top angle: 118 ° Podbrus type C Drilling depth: 5xD Material: HSS Drill production technology: milled / blackened Standard: ZV5001 / DIN341 / DIN 1870 RN / replacement for ČSN 221150 Usage: Extra long drills recommended for drilling deep holes through drill bushes in components made of non-alloy and alloy steel, steel castings up to 900N / mm2, gray, malleable and ductile iron, sintered steel, etc. When drilling deep holes, it is necessary to prevent clogging of grooves by frequent by rinsing the drilled hole. Due to the poor supply of cutting fluid, it is necessary to reduce the recommended cutting conditions.

Machine drill with cylindrical shank, with three cutting edges Average: according to the selected variant Tolerance: Nominal dimension in tolerance h8 for hole with allowance for further more precise machining Other dimensions - see enclosed catalog sheet Material: HSS - high-performance high-speed steel Standard: ČSN 221480 / CSN 22 1480 / DIN344 / DIN 344 / ISO 7079 Usage: Machining of pre-drilled, cast or pre-pressed holes to achieve higher hole accuracy.

Machine drill with taper shank, with four cutting edges Average: according to the selected variant Tolerance: Nominal dimension in tolerance h8 for hole with allowance for further more precise machining Other dimensions - see enclosed catalog sheet Material: HSS - high-performance high-speed steel Standard: ČSN 221411 / CSN 22 1411 / DIN222 / DIN 222 / ISO 3314 Usage: Machining of pre-drilled, cast or pre-pressed holes to achieve higher hole accuracy.