Twist drill bit DIN 338 type N, HSS-R, diameter 8.5 mm, overall length 117 mm

With a diameter of 8.5 mm and a diameter tolerance of h8 this drill to DIN 338 is laid out for common materials. Characteristic values are an overall length of 117 mm and a flute length of 75 mm. The grade HSS-R stands for a roll-formed drill made of high-performance high-speed steel with increased resistance to breakage and a ground chamfer.

Benefits

• Diameter 8.5 mm with diameter tolerance h8
• overall length 117 mm, of which 75 mm flute length
• 118 degree point angle with standard point grind
• black surface
• tapping drill for thread M 10

Technical data

Fields of application

The intended use covers steel, alloyed and unalloyed cast steel below 900 N/mm² tensile strength, grey cast iron, malleable cast iron, spheroidal graphite cast iron, die casting, sintered iron, nickel silver, graphite, short-chipping aluminium alloys, brass and bronze.

Standards

The drill complies with DIN 338 in the type N version.