kwb 217042 HSS Twist Drill Bit 4.2 mm DIN 340 Long Series

For metalworkers and DIYers drilling precise 4.2 mm holes in steel, wood, or plastic, the kwb 217042 HSS twist drill bit delivers reliable performance. Its DIN 340 long-series design provides extra reach for deep holes, while the bright finish and 118° point angle ensure clean starts and efficient chip removal.

Key specifications

• Drill bit type: Twist drill bit
• Material: HSS (High-Speed Steel)
• Standard: DIN 340
• Drill diameter: 4.2 mm
• Total length: 119 mm
• Working length: 78 mm
• Shank type: Cylindrical
• Shank diameter: 4.2 mm
• Point angle: 118°
• Cutting direction: Right-hand cut
• Surface finish: Bright
• Recommended application: Metal, Wood, Plastic
• Tool holder compatibility: Drill chucks (e.g., gear rim drill chucks)
• Quantity per pack: 1 piece

Why choose it

This bit is made from high-speed steel for durability and heat resistance. The cylindrical shank fits standard drill chucks, and the right-hand cutting direction suits most drilling tasks. Its long series length allows drilling deeper holes than standard jobber bits.

Ideal use cases

• Drilling pilot holes for screws in metal
• Creating clearance holes in wood or plastic
• Deep-hole drilling in machine components

Good to know

Use cutting fluid when drilling metal to extend bit life. The bright finish provides a clean surface, but the bit is not coated for high-performance applications.