Product details:

The precision twist r40 stub length 118-degree conventional point general-purpose round shank drill bit made of high-speed steel hss with uncoatedbright finish. It is suitable for drilling holes to a depth up to two-and-a-half times the diameter of the drill size. The shank diameter is the same as the drill size. It comes with an uncoated bright finish which helps keep costs down yet provides acceptable performance in most situations. For drill bit sizes larger than 45/64 inch the drills have a black oxide finish which gives a strongly adhering surftreatment that acts to retain cutting fluid and prevent chip to tool welding reducing the formation of a built-up edge. Drilling or hole making is the most common metalworking operation in the world. Twist drill bits are the most common type of drill bit used. Twist drill bits are commonly used to drill holes with hand-operated drills standalone drill presses or lathes. The flutes of the drill bit act a passageway for chip extrfrom the hole and for coolant to enter the hole. These drill bits have a right-hand twist that brings chips up and away from the cutting edge. They are made to din 1897 industry standards metric sizing which helps ensure that drill bits around the world conform to the same specifications. Precision manufactures machine tools under the following brands: precision twist precision dormer and union butterfield. They have locations around the world and provide tools adhering to ansi nas and din standards. Model 040552 features: short-length drill bits also called stub length provide better rigidity and increased strength 118-degree conventional point angles good for general drilling applications round shanks can be used with a variety of tool-holding systems uncoated bright economical and useful with a wide range of drilling applications high-speed steel hss for use on a wide variety of materials.