This M42 screw machine drill bit is made of cobalt and has a 25/64 inch diameter, 1⅜ inch long shank. It is designed for use with cast iron, steel, tool and die steel. This 559 series screw machine length drill bit has a straw/bronze finish, and has letter measurements. It has a 3 5/16 inch length. Plus it has two 1 15/16 inch spiral flutes, a straight shank, and a 135 Degrees split point.
Technical Specs
ItemScrew-Machine Length Drill Bit
Decimal Equivalent0.397
Material - MachiningCobalt
Drill Bit Point Angle135 Degrees
Flute TypeSpiral
Flute Length1 15/16 in
Helix Angle28 Degrees
Spiral DirectionRight Hand
Shank Dia.25/64 in
Overall Length3 5/16 in
Drill Length ClassScrew Machine Length
Drill Bit GroupingIndividual
StandardsNot Rated
Material Grade - MachiningM42
Primary Material Application ISO CodeK, P
Drill Bit SizeX
Measurement SystemLetter
Finish - MachiningStraw/Bronze
Drill Bit Point TypeSplit Point
Number of Flutes2
Maximum Drilling Depth1 15/16 in
Cutting DirectionRight Hand
Shank Type - MachiningStraight
Shank Length1 3/8 in
Depth:Dia. Ratio4xD
Drill Point Length0.0000 in
Series559
Drill Diameter Tolerance+0.0000 in/-0.0010 in
Primary Material ApplicationCast Iron, Steel, Tool and Die Steel
List Number559
Country of OriginUnited States
(subject to change)