This screw machine drill bit is made of high speed steel and has a 7/16 inch diameter, 1⅜ 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 fractional inch measurements. It has a 3 7/16 inch length. Plus it has two 2 1/16 inch spiral flutes, a straight shank, and 118 Degrees conventional point.
Technical Specs
ItemScrew-Machine Length Drill Bit
Decimal Equivalent0.4375
Material - MachiningHigh Speed Steel
Drill Bit Point Angle118 Degrees
Flute TypeSpiral
Flute Length2 1/16 in
Helix Angle28 Degrees
Spiral DirectionRight Hand
Shank Dia.7/16 in
Overall Length3 7/16 in
Drill Length ClassScrew Machine Length
Drill Bit GroupingIndividual
StandardsNot Rated
Primary Material ApplicationAluminum, Brass, Bronze, Cast Iron, Copper, Steel