Twist drill bit KWB 217035 HSS 3.5 mm Length 112 mm DIN 340

The KWB 217035 is a long HSS-G twist drill designed for precise drilling in metal and plastic. With a 3.5 mm diameter and a total length of 112 mm, this drill complies with DIN 340 and DIN 1412 C standards and features a cylindrical shank for use in standard chucks. Its 135° point provides self-centring performance and allows drilling without pre-drilled pilot holes. The bright surface finish reduces friction and contributes to longer tool life.

Advantages

The long HSS-G construction delivers reliable cutting performance in steels, cast iron, sintered iron and non-ferrous metals. The 135° split-point geometry improves centring and reduces walking on the workpiece, while the bright finish lowers friction and wear. The cylindrical shank and standard dimensions ensure compatibility with common drill chucks and workshop equipment.

Suitable for

• Drilling holes in steel and non-alloy metals
• Workshop and site use where longer reach is required
• Drilling into cast iron and sintered iron components
• Applications requiring a self-centring point to avoid pre-drilling

When it may not be suitable

This drill is not intended for high-speed drilling in hardened steels or abrasive materials such as concrete, masonry or ceramic tile. For applications requiring extreme wear resistance or very high drilling speeds, carbide or coated drills may be more appropriate.

Key specifications

• Material: High-speed steel (HSS-G)
• Diameter: 3.5 mm
• Total length: 112 mm
• Point angle: 135° (self-centring)
• Shank type: Cylindrical
• Standards: DIN 340, DIN 1412 C
• Rotation: Right-hand

How to use

Secure the drill bit in a suitable chuck with the cylindrical shank fully seated. Use appropriate cutting speeds and feed rates for the material being drilled and apply steady axial pressure. For deeper holes, periodically withdraw the bit to clear chips and reduce heat. Use cutting fluid when drilling steels and other metals to improve lubrication and extend tool life.

What to consider before purchase

• Verify that a 3.5 mm diameter and 112 mm length meet the hole size and reach required for your task
• Confirm compatibility of the cylindrical shank with your drill chuck or holder
• Consider material to be drilled—HSS-G is suited to unalloyed steels, cast iron and non-ferrous metals but not for concrete or very hard steels

Usage recommendations

The KWB 217035 HSS 3.5 mm long twist drill performs best at moderate cutting speeds with appropriate cutting fluid when used in steels and non-ferrous metals. Retract occasionally to clear chips and avoid overheating for longer tool life.