Guhring NC spotting drill F557, shank diameter 20mm, center hole angle 90° F557 020.000, 1 piece

Catalogue number: F557 020.000 Features: ●Thin core, so no thinning is required even after grinding. ●Extremely short chisel width allows for sharp cone-shaped center holes. ●Centering and chamfering can be done in one process. Applications: ●Cutting materials: general structural steel, carbon steel, alloy steel, stainless steel, aluminum alloy, cast iron. ●Positioning processing. ●Hole chamfering. Specifications: ●Thread diameter (mm): 20 ●Shank diameter (mm): 20 ●Total length (mm): 131 ●Center hole angle (°): 90 ●Surface treatment: Fire coating ●Blade shape: single-edged ●Number of blades (pieces): 2 Material/Finish: ●High-speed tool steel (HSS)