Drill bit Bosch 8 mm HSS 2608833791 for metal drilling

Bosch 8 mm HSS drill bit is a high-speed steel cutting tool designed for drilling metal and other hard materials. With an 8 mm diameter and precision ground tip, this drill bit supports accurate holemaking in steel, cast iron and non-ferrous metals. Its HSS construction provides improved heat resistance and wear performance for repeated drilling in workshop and professional environments. The bit is compatible with hand drills and drill presses, delivering consistent results in fabrication, maintenance and repair tasks.

Advantages

The HSS material increases hardness at elevated temperatures, reducing edge wear and extending service life compared with standard carbon-steel bits. Precision grinding of the flute and point ensures stable cutting, reduced wandering at startup and uniform chip evacuation. Its straight-shank design enables secure clamping in common chucks and quick bit changes. The compact 8 mm diameter is suitable for standard clearance and fastening holes without excessive material removal.

Suitable for

• Drilling holes in structural steel and sheet metal
• Creating pilot holes for taps and larger drill sizes
• Repair and maintenance tasks in workshops and construction sites
• Use with hand-held drills and benchtop drill presses

Key specifications

• Diameter: 8 mm
• Material: High-speed steel (HSS)
• Shank type: Straight round shank for standard chucks
• Tip: Precision ground point for accurate centring
• Intended materials: Steel, cast iron, non-ferrous metals

How to use

Mark the drilling position and secure the workpiece to prevent movement. Select an appropriate cutting speed for the material and apply steady feed pressure; use cutting fluid or coolant when drilling steel to reduce heat and prolong bit life. Start at low speed to establish the centre, then increase speed as needed while maintaining control. Withdraw periodically to clear chips when drilling deep holes. After use, clean the bit and store it dry to avoid corrosion.

Usage recommendations

For best performance when drilling metal, use moderate spindle speeds and lubricants suitable for ferrous materials. Replace the drill bit when wear or chipping becomes evident to maintain hole accuracy and reduce the risk of workpiece damage.