Twist drill bit Bosch HSS hex-shank 3.2 mm

The Bosch Twist drill bit HSS with a 3.2 mm diameter and 1/4-inch hex shank is designed for precision drilling in metal and wood. Made from high-speed steel with an oxide-coated flute, this twist drill bit is manufactured to DIN 338 (Type N) with a 135° split-point tip and diameter tolerance h8, ensuring accurate centring and active cutting. The hex shank provides a secure grip for universal use with impact drivers and standard chucks; the bit is supplied in a blister pack for easy storage and transport.

Advantages

Precision-ground from solid HSS for consistent hole quality and durability; oxide-coated flute reduces wear and improves chip evacuation. DIN 338 manufacturing and h8 tolerance deliver reliable dimensional accuracy. The 135° split-point tip ensures fast penetration with accurate centring, and the 1/4-inch hex shank prevents slipping in impact drivers and quick-change chucks.

Suitable for

• Drilling holes in metal sheets and mild steel
• General-purpose drilling in wood
• Use with impact drivers and drills with 1/4-inch hex chucks
• Professional and DIY metalworking applications

Key specifications

• Brand: Bosch
• Model / MPN: 2608577049
• EAN: 3165140858762
• Type: Twist drill bit, HSS
• Diameter: 3.2 mm
• Shank: 1/4-inch hex
• Standard: DIN 338, Type N (flute angle)
• Tip angle: 135° split-point
• Tolerance: h8
• Packaging: blister pack

How to use

Mark the drilling position and secure the workpiece. Insert the 1/4-inch hex shank into the drill or impact driver chuck and tighten. Start drilling at low speed to establish the centre, then increase speed as appropriate for the material. Apply steady, even pressure and allow the HSS bit to cut without forcing; clear chips regularly to avoid clogging. For thicker or harder metals, use cutting fluid to reduce heat and extend bit life.

Recommendations

Use appropriate personal protective equipment (safety glasses, gloves) and clamp the workpiece securely. Select suitable speeds and lubrication for the material to maximise bit life; replace the bit if the tip is worn or damaged. The 3.2 mm Bosch HSS hex-shank bit is intended for metal and wood; avoid using it on masonry or ceramic materials.