This general purpose jobber length drill bit is made of high speed steel and has a 5/16 inch diameter, 1 5/16 inch long shank. It is for use with aluminum, brass, bronze, copper. This 150D series jobber length drill bit has a bright (uncoated) finish, and has fractional inch measurements. It is non-coolant through with a 4⅝ inch length. Plus it has two 3 5/16 inch spiral flutes, a straight shank, and 118 Degrees conventional point.
Technical Specs
ItemJobber Length Drill Bit
Decimal Equivalent0.3281
Material - MachiningHigh Speed Steel
Drill Bit Point Angle118 Degrees
Coolant FedNon-Coolant Through
Flute TypeSpiral
Flute Length3 5/16 in
Helix Angle28 Degrees
Spiral DirectionRight Hand
Shank Dia.5/16 in
Overall Length4 5/8 in
Drill Length ClassJobber Length
Drill Bit GroupingIndividual
StandardsNot Rated
Drill Diameter Tolerance+0.0000 in/-0.0010 in
Web ThinningThinned
Primary Material ApplicationAluminum, Brass, Bronze, Copper
List Number150D
Drill Bit Size21/64 in
Measurement SystemFractional Inch
Finish - MachiningBright (Uncoated)
Drill Bit Point TypeConventional Point
Number of Coolant Holes0
Number of Flutes2
Maximum Drilling Depth1 5/16 in
Cutting DirectionRight Hand
Shank Type - MachiningStraight
Shank Length1 5/16 in
Depth:Dia. Ratio4xD
Drill Point Length0.0986 in
Series150D
Aircraft DrillNo
Sheeter DrillNo
Material Grade - MachiningGeneral Purpose
Primary Material Application ISO CodeN
Country of OriginUnited States
(subject to change)