This general purpose screw machine drill bit is made of high speed steel and has a 13/16 inch diameter, 1⅞ inch long shank. It is for use with cast iron, steel, and meets ANSI standards. This 157 series screw machine length drill bit has a black oxide finish, and has fractional inch measurements. It is non-coolant through with a 5¼ inch length. Plus it has two 3⅜ inch spiral flutes, a straight shank, and 118 Degrees conventional point.
Technical Specs
ItemScrew-Machine Length Drill Bit
Decimal Equivalent0.8125
Material - MachiningHigh Speed Steel
Drill Bit Point Angle118 Degrees
Flute TypeSpiral
Flute Length3 3/8 in
Helix Angle28 Degrees
Spiral DirectionRight Hand
Shank Dia.13/16 in
Overall Length5 1/4 in
Drill Length ClassScrew Machine Length
Coolant FedNon-Coolant Through
Series157
Drill Diameter Tolerance+0.0000 in/-0.0012 in
Primary Material ApplicationCast Iron, Steel
List Number157
Drill Bit Size13/16 in
Measurement SystemFractional Inch
Finish - MachiningBlack Oxide
Drill Bit Point TypeConventional Point
Number of Flutes2
Maximum Drilling Depth3 3/8 in
Cutting DirectionRight Hand
Shank Type - MachiningStraight
Shank Length1 7/8 in
Depth:Dia. Ratio4xD
Drill Point Length0.2441 in
Drill Bit GroupingIndividual
StandardsANSI
Material Grade - MachiningGeneral Purpose
Primary Material Application ISO CodeK, P
Country of OriginUnited States
(subject to change)