SMART365 HSS-Co Step-Tec Twist Drill Bit 5.5 mm, 5-Piece Set

The SMART365 HSS-Co Step-Tec twist drill bit set offers precision and durability for metal drilling applications. Each bit is manufactured from high-speed steel with 5% cobalt content (HSS-Co5) for enhanced heat and wear resistance. The 135° split point ensures self-centering and reduces walking, while the fully ground finish provides clean, accurate holes. This 5-piece set includes bits with a 5.5 mm diameter, ideal for alloyed and unalloyed steel, stainless steel, cast iron, and non-ferrous metals.

Advantages

High-performance cobalt steel alloy extends tool life and maintains cutting edge under high temperatures. The split point design eliminates the need for pilot drilling, saving time and improving accuracy. Cylindrical shank fits standard drill chucks, compatible with corded/cordless drills and drill presses.

Suitable for

• Metal drilling in steel, stainless steel, cast iron, and non-ferrous metals
• Professional workshops, industrial maintenance, and DIY metalworking
• Use with corded or cordless drills and drill presses

Key specifications

• Material: HSS-Co (High-Speed Steel Cobalt)
• Diameter: 5.5 mm
• Quantity per Pack: 5 pieces
• Standard: DIN 338
• Point Type: Split Point (Self-Centering)
• Point Angle: 135°
• Shank Type: Cylindrical
• Cobalt Content: 5% (HSS-Co5)
• Manufacturing Process: Fully Ground
• Finish: Bright / Uncoated
• Helix Angle: Standard (approx. 25-30°)
• Heat Resistance: Very High
• Wear Resistance: Very High
• Recommended Use: Corded/Cordless Drills, Drill Presses

Recommendations

For optimal performance, use appropriate cutting speeds and lubrication when drilling stainless steel. Always wear safety goggles and follow manufacturer guidelines.