Guhring 618 3.50mm HSS-Co High Helix (Parabolic Flute) Straight Shank Extra Length Drills
High heat resistant drill with wide chip space for very deep holes in difficult conditions, such as when swarf congestion hinders the flow of coolant to the drill point or when tool overheating arises from other causes. For use in steels and cast steels of high tensile strength (not suitable for lubrication holes in crankshafts).
Features
Manufactured to DIN 1869
Shank tolerance h8
130 Point angle
Web thinning >2.70
15xD
Straight shank , Extra length
Increased wear resistance
Sizes 3.00mm to 10.00mm