RUKO LOS-HSSCo-29mm HSS-Co Twist Drill Bit with Reduced Shank, 29 mm

Industrial machinists and metalworking professionals rely on the RUKO LOS-HSSCo-29mm for heavy-duty drilling in alloyed steel, stainless steel, and cast iron. This 29 mm twist drill bit is made from high-speed steel with 5% cobalt (M35 grade), offering high heat resistance and excellent wear resistance for demanding applications.

Key specifications

• Drill bit type: Twist drill bit
• Diameter: 29 mm
• Material: High-speed steel with cobalt (HSS-Co, 5% cobalt, M35 grade)
• Shank type: Reduced shank (1/2" or 3/4" compatible)
• Point angle: 135°
• Point type: Split point
• Surface finish: Bright (uncoated)
• Manufacturing process: Fully ground
• Cutting direction: Right-hand cut
• Standard: DIN 338 (with reduced shank adaptation)
• Suitable materials: Alloyed and unalloyed steel, stainless steel, cast iron, non-ferrous metals
• Tensile strength compatibility: Up to 1100 N/mm²
• Packaging: Single piece

Why choose it

The 5% cobalt alloy enhances hardness and heat resistance, allowing the bit to maintain sharpness longer than standard HSS bits. The split point design reduces walking and improves centering accuracy, while the fully ground flutes ensure efficient chip removal.

Ideal use cases

• Drilling large holes in steel plates and structural components
• Maintenance and repair in industrial settings
• Fabrication of stainless steel equipment
• Machining of cast iron parts

Good to know

The reduced shank allows this 29 mm bit to fit standard drill chucks with 1/2" or 3/4" capacity. Use appropriate cutting fluid for stainless steel to maximize tool life. Store in a dry environment to prevent corrosion.