This general purpose screw machine drill bit is made of high speed steel and has a 21/64 inch diameter, 1 5/16 inch long shank. It is for use with aluminum, brass, bronze, cast iron, copper, and steel. This 157 series screw machine length drill bit has a bright (uncoated) finish, and has letter measurements. It has a three-inch length. Plus it has two 1 11/16 inch spiral flutes, a straight shank, and 118 Degrees conventional point.
Technical Specs
ItemScrew-Machine Length Drill Bit
Measurement SystemLetter
Finish - MachiningBright (Uncoated)
Drill Bit Point TypeConventional Point
Number of Flutes2
Maximum Drilling Depth1 11/16 in
Cutting DirectionRight Hand
Shank Type - MachiningStraight
Shank Length1 5/16 in
Depth:Dia. Ratio4xD
Drill Point Length0.0000 in
Series157
Drill Diameter Tolerance+0.0000 in/-0.0010 in
Primary Material ApplicationAluminum, Brass, Bronze, Cast Iron, Copper, Steel