General purpose taper shank drill bits. High speed steel construction with a 135 degree point and a black oxide finish. Material applications: alloyed steel, tool steel, carbon steel, and cast iron.
Technical Specs
ItemTaper Shank Drill Bit
Decimal Equivalent1.25
Material - MachiningHigh Speed Steel
Drill Bit Point Angle118 Degrees
Flute TypeSpiral
Flute Length7 7/8 in
Helix Angle21 Degrees to 34 Degrees
Spiral DirectionRight Hand
Taper Shank SizeMT4
Depth:Dia. Ratio4xD
Drill Bit GroupingIndividual
Drill Diameter Tolerance+0.0000 in/-0.0015 in
Primary Material ApplicationCast Iron, Steel
List Number2410
Drill Bit Size1 1/4 in
Measurement SystemFractional Inch
Finish - MachiningBlack Oxide
Drill Bit Point TypeConventional Point
Number of Flutes2
Maximum Drilling Depth7 7/8 in
Cutting DirectionRight Hand
Shank Type - MachiningTaper
Overall Length13 1/2 in
Coolant FedNon-Coolant Through
StandardsASME B94.11M
Material Grade - MachiningGeneral Purpose
Primary Material Application ISO CodeK, P
Country of OriginUnited States
(subject to change)