This screw machine drill bit is made of high speed steel and has a 29/64 inch diameter, 1 7/16 inch long shank. It is for use with aluminum, brass, bronze, cast iron, copper, and steel. This 157-TN series screw machine length drill bit has a TiN finish, and has fractional inch measurements. It has a 3 9/16 inch length. Plus it has two 2⅛ inch spiral flutes, a straight shank, and 118 Degrees conventional point.
Technical Specs
ItemScrew-Machine Length Drill Bit
Decimal Equivalent0.4531
Material - MachiningHigh Speed Steel
Drill Bit Point Angle118 Degrees
Flute TypeSpiral
Flute Length2 1/8 in
Helix Angle28 Degrees
Spiral DirectionRight Hand
Shank Dia.29/64 in
Overall Length3 9/16 in
Drill Length ClassScrew Machine Length
Drill Bit GroupingIndividual
StandardsNot Rated
Primary Material ApplicationAluminum, Brass, Bronze, Cast Iron, Copper, Steel
List Number2157
Drill Bit Size29/64 in
Measurement SystemFractional Inch
Finish - MachiningTiN
Drill Bit Point TypeConventional Point
Number of Flutes2
Maximum Drilling Depth2 1/8 in
Cutting DirectionRight Hand
Shank Type - MachiningStraight
Shank Length1 7/16 in
Depth:Dia. Ratio4xD
Drill Point Length0.1361 in
Series157-TN
Drill Diameter Tolerance+0.0000 in/-0.0010 in
Primary Material Application ISO CodeK, N, P
Country of OriginUnited States
(subject to change)