Broca helicoidal RUKO SPB-DIN338-HSSCo8-Ø9,5mm HSS-Co8 DIN 338

Twist drill bit with 9.5 mm diameter, manufactured from HSS-Co8 high-speed steel containing 8% cobalt. The split point geometry self-centers and reduces walking, while the 135° point angle penetrates tough materials efficiently. Ground from solid for precise concentricity and a bright, uncoated finish.

Advantages

HSS-Co8 offers high heat and wear resistance, making this bit suitable for drilling alloyed and unalloyed steel up to 1100 N/mm² tensile strength, stainless steel, cast iron, and non-ferrous metals. The cylindrical shank fits standard three-jaw chucks, and the DIN 338 standard ensures consistent dimensions: overall length 125 mm, flute length 87 mm, shank diameter 9.5 mm, tolerance h8.

Suitable for

• Alloyed and unalloyed steel
• Stainless steel
• Cast iron
• Non-ferrous metals

Key specifications

• Drill bit type: Twist drill bit
• Standard: DIN 338
• Material: HSS-Co8 (high-speed steel with 8% cobalt)
• Drill diameter: 9.5 mm
• Shank type: Cylindrical (straight shank)
• Shank diameter: 9.5 mm
• Point angle: 135°
• Point type: Split point (self-centering)
• Surface finish: Bright (uncoated)
• Overall length: 125 mm
• Flute length: 87 mm
• Tolerance: h8
• Direction of cut: Right-hand cut
• Max. tensile strength compatibility: 1100 N/mm²
• Manufacturing process: Ground from solid
• Packaging quantity: 1 piece

Recommendations

For best results, use a cutting fluid when drilling steel or stainless steel to dissipate heat and extend tool life. Ensure the workpiece is securely clamped and the drill is held perpendicular to the surface.