Twist drill bit DIN 338 type N, HSS-G, diameter 7 mm, overall length 109 mm

With a diameter of 7 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 109 mm and a flute length of 69 mm. The HSS-G version is a drill ground from solid stock in high-performance high-speed steel with increased concentricity.

Benefits

• Diameter 7 mm with diameter tolerance h8
• overall length 109 mm, of which 69 mm flute length
• 118 degree point angle, cross grinding from 3 mm upwards
• bright surface
• right-hand cutting version to DIN 338 type N

Technical data

Fields of application

The stated application is drilling in 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. The point thinning from 3 mm upwards follows the cross grind to DIN 1412 C.