Bosch Professional Cone & Stepped Drill Bits
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Bosch Professional Cone & Stepped Drill Bits at Tooled-Up.com
Bosch Professional Cone & Stepped Drill Bits are built for drilling clean, burr-free holes in thin materials such as sheet steel, stainless steel, non-ferrous metals and sheet plastic. One bit covers a series of hole diameters, so there is no need to keep swapping twist drills. Tooled-Up.com stocks the bits as single step drills, 3 piece sets, hex shank versions and a HSS sheet metal cone cutter.
The selection is split by material and coating. Choose the standard HSS Step Drill Bit for general work, the HSS-TiN version for longer life, or the HSS-AlTiN version for tougher jobs. Hex shank versions suit impact drivers and quick-change chucks.
Key Features of Bosch Professional Cone & Stepped Drill Bits
- Split-point tip: Starts accurately without centre punching, so the bit does not wander on thin sheet.
- CNC ground spiral flute: Clears chips efficiently, which keeps the cut cleaner and reduces clogging.
- Stepped profile: Drills and deburrs in a single pass, so holes need little or no finishing.
- HSS-TiN coating: Reduces friction and heat for longer life than uncoated HSS when drilling regularly.
- HSS-AlTiN coating: Gives extra heat resistance and wear protection for harder materials such as stainless steel.
- Hex shank option: Grips firmly in hex chucks and impact drivers, so the bit is less likely to slip.
- Cone cutter design: The HSS Sheet Metal Cone Cutter Drill Bit takes a smooth, tapered route through sheet metal for a wide range of hole sizes.
Who Uses Bosch Professional Cone & Stepped Drill Bits?
Electricians use them to open up cable entry holes in consumer units, trunking, enclosures and back boxes. Plumbers and heating engineers use them for pipe and cable penetrations through thin metal panels. Ventilation and HVAC fitters rely on them for ductwork, flue plates and vent openings, while sheet metal workers, fabricators and vehicle technicians use them for brackets, panels and enclosures where a neat finish matters.
The Tooled-Up Bosch Professional range also suits maintenance engineers and shopfitters who need one bit that handles many hole sizes on site. The 3 piece sets are handy for covering small, medium and large diameters without carrying a drill case.
Frequently Asked Questions
Which Bosch Professional step drill bit should I choose?
Go for the HSS Step Drill Bit for occasional work in thin sheet and plastic. The HSS-TiN version suits frequent drilling in steel and non-ferrous metals. The HSS-AlTiN version is the better pick for stainless steel and other demanding jobs where heat resistance matters.
What is the benefit of a hex shank step drill bit?
A hex shank locks securely into hex chucks and impact drivers, which helps prevent slipping under load. It also makes bit changes quicker, which is useful on busy sites.
Do I need to centre punch before using a step drill bit?
No. The split-point tip is designed to start accurately without pre-punching. Use a steady speed and firm, even pressure, and clamp thin sheet down before drilling. Browse the full Bosch Professional selection at Tooled-Up.com to find the right bit for the job.