Precision-max Step Point 4.2mm Hss Drill Ind. 1pce

Features

• 4.2 mm diameter — ideal for precision work and pilot holes.
• Stepped spiral tip (step-point geometry) — helps reduce walking at startup.
• Split point design — aids in self-centering and clean entry.
• Tri-flat shank — prevents slippage in the chuck for better torque transfer.
• Material: M2 High Speed Steel / Tungsten-Molybdenum HSS grade.
• Fully ground flutes for smoother cutting.
• Tip angle: approximately 135° for better centering and reduced burrs.

Benefits

• Accurate starts: Step point and split point minimize drifting and improve entry alignment.
• Better grip in chuck: Tri-flat shank means less slipping under torque.
• Cleaner finishes: Reduced burrs and smoother edges in metals and plastics.
• Versatile use: Suitable for mild steel, stainless steel, aluminium and plastic work.

Extra Information

• Use cutting oil or lubricant when drilling steels to reduce friction and extend bit life.
• Start with moderate RPM (especially in stainless) and feed gently to avoid chattering or breakage.
• Support thin sheet materials with backing to reduce exit burr or breakout.
• Inspect bit regularly; resharpen if edges dull to maintain precision.

Specifications

Safety

• Wear eye protection — chips or fragments may eject during use.
• Secure the workpiece properly — never hold by hand during drilling.
• Do not force the bit laterally — allow cutting edges to do the work.
• Manage heat — pause or reduce feed if the workpiece or bit gets hot.