kwb 238630 HSS-R kierrepora 3 mm DIN 338

Drill precise 3 mm holes in metal, steel, and hard plastics with this kwb HSS-R twist drill bit. The steam-tempered black oxide surface reduces friction and improves chip evacuation, while the 118° point angle and right-hand cutting direction ensure clean starts and efficient drilling. Suitable for use with cordless drills, electric drills, and bench drills.

Key specifications

• Diameter: 3 mm
• Total length: 61 mm
• Working length: 33 mm
• Material: HSS-R (rolled high-speed steel)
• Standard: DIN 338
• Shank type: cylindrical
• Point angle: 118°
• Surface: steam tempered (black oxide)
• Cutting direction: right-hand
• Pack quantity: 1 piece

Why choose it

Rolled HSS-R steel offers a good balance of hardness and toughness for general-purpose drilling. The black oxide finish helps the bit run cooler and resist corrosion, extending its life in demanding applications.

Ideal use cases

• Drilling sheet metal and thin steel profiles
• Creating pilot holes for screws in metal
• Working with non-ferrous metals like aluminium and brass
• Drilling hard plastics and wood

Good to know

Use a centre punch to mark the drilling point and apply steady pressure with a suitable cutting fluid for best results in steel. The cylindrical shank fits standard three-jaw chucks.