RUKO SPB-DIN338-HSSCo8-Ø1.3mm HSS-Co 8% Cobalt Twist Drill Bit

Precision drilling in tough materials demands a bit that stays sharp and true. The RUKO SPB-DIN338-HSSCo8-Ø1.3mm twist drill bit solves the problem of premature wear and wandering holes when working with alloyed steel, stainless steel, and other hard metals. Its 8% cobalt alloy and split point geometry deliver clean, accurate holes with less effort.

Who is it for

Professional machinists, metalworkers, and serious DIYers who need reliable performance in high-strength materials up to 1100 N/mm². Ideal for maintenance, fabrication, and production environments where tool life and hole quality are critical.

Main features

• HSS-Co 8% cobalt high-speed steel for high heat resistance and durability
• Split point (cross-ground) tip reduces walking and enables faster penetration
• 135° point angle optimized for hard metals
• Fully ground flutes for smooth chip evacuation and accurate hole size
• Bright finish for clean cutting and corrosion resistance
• DIN 338 standard dimensions with cylindrical shank

Specifications

• Drill bit type: Twist drill bit
• Material: HSS-Co 8% (High-Speed Steel with 8% Cobalt)
• Standard: DIN 338
• Diameter: 1.3 mm
• Overall length: 38 mm
• Flute length: 16 mm
• Shank type: Cylindrical (straight shank)
• Point angle: 135°
• Point type: Split point (cross-ground)
• Cutting direction: Right-hand cutting
• Tolerance: h8
• Manufacturing process: Fully ground
• Surface finish: Bright (uncoated)
• Recommended applications: Alloyed and unalloyed steel, stainless steel, cast iron, non-ferrous metals
• Max tensile strength: 1100 N/mm²
• Heat resistance: High
• Packaging quantity: 1 piece

Tips

Use a cutting fluid or coolant when drilling stainless steel to extend tool life. For precise holes, pre-punch or center-drill the workpiece before using this bit. Store in a dry place to maintain the bright finish.