This high-performance jobber length drill bit is made of high speed steel and has a ¼ inch diameter, 1¼ inch long shank. It is for use with cast iron, steel, and meets ASME standards. This 2011 series jobber length drill bit has a black oxide finish, and has fractional inch measurements. It is non-coolant through with a four-inch length. Plus it has two 2¾ inch spiral flutes, a straight shank, and a 135 Degrees split point.
Technical Specs
ItemJobber Length Drill Bit
Decimal Equivalent0.25
Material - MachiningHigh Speed Steel
Drill Bit Point Angle135 Degrees
Coolant FedNon-Coolant Through
Flute TypeSpiral
Flute Length2 3/4 in
Helix Angle21 Degrees /34 Degrees
Spiral DirectionRight Hand
Shank Dia.1/4 in
Overall Length4 in
Drill Length ClassJobber Length
Drill Bit GroupingIndividual
StandardsASME B94.11M
Drill Diameter Tolerance+0.0000 in/-0.0007 in
Web ThinningThinned
Application - matière principaleCast Iron, Steel
List Number2011
Drill Bit Size1/4 in
Measurement SystemFractional Inch
Finish - MachiningBlack Oxide
Drill Bit Point TypeSplit Point
Number of Coolant Holes0
Number of Flutes2
Maximum Drilling Depth1 in
Cutting DirectionRight Hand
Shank Type - MachiningStraight
Shank Length1 1/4 in
Depth:Dia. Ratio4xD
Drill Point Length0.0518 in
Series2011
Aircraft DrillNo
Sheeter DrillNo
Material Grade - MachiningHigh Performance
Primary Material Application ISO CodeK, P
Country of OriginUnited States
(subject to change)