Precision-max Step Point 4.8mm Hss Drill Ind. 1pce

Features

• 4.8 mm diameter — suitable for mid-size fastener holes and precision work.
• Step-point geometry — helps reduce wandering and improves centering.
• High Speed Steel (HSS) — good balance of toughness and wear resistance for general workshop use.
• Straight shank — compatible with standard 3-jaw chucks.
• Fully ground flutes — for easier chip removal and reduced friction.
• Tip angle (approx): ~135° — sharp entry with controlled cutting action.

Benefits

• Better starts: step-point geometry plus self-centering design reduce start drift.
• Cleaner holes: smoother edges and reduced burrs in metals and plastics.
• Reliable performance: HSS body with balanced strength for general use.
• Flexibility: works across a range of materials — metals, plastics, laminates.

Extra Information

• Use cutting fluid when drilling ferrous metals to reduce wear and heat generation.
• Use moderate RPMs and steady feed; avoid forcing the drill.
• Support thin sheet with scrap or backing to prevent exit burr or cracking.
• Withdraw bit periodically in deeper holes to clear chips and cool it down.

Specifications

Safety

• Always wear eye protection — debris and chips may fly during drilling.
• Secure the workpiece firmly — avoid holding small parts by hand during drilling.
• Feed steadily; don’t force the bit into the material.
• Monitor bit temperature; if hot, pause and allow cooling or use cutting fluid.