HSS S/S BRIGHT L/S DRILL 4.50MM

General purpose drills to drill steels with tensile strength up to 1,000N/mm2, cast steel, grey cast iron, malleable cast iron, nickel brass and graphite. Point angle: 118°, helix angle: normal, web thickness: normal, relief angle: 10° - 20°, tolerance of diameter: h8, tolerance of f11. Manufactured to BS 328; Part 1: 1986, DIN 340 RN, ISO 494.Drills with a bright finish are supplied in the as-ground condition and such tools are used generally in the machining of non-ferrous materials. Series L100-Bright Finish

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