This heavy-duty jobber drill bit is made of high speed steel and has a 5/16 inch diameter shank. It is for use with hard metal, stainless steel. This 400N series jobber length drill bit has a black and gold finish, and has fractional measurements. It has a 135 Degrees drill bit point, with a 4½ inch length. Plus it has two 3 3/16 inch spiral flutes, a straight shank, and a 135 Degrees split point.
Technical Specs
ItemJobber Drill
Decimal Equivalent0.3125 in
Material - MachiningHigh Speed Steel
Drill Bit Point Angle135 Degrees
Flute TypeSpiral
Flute Length3 3/16 in
Cutting DirectionRight Hand
Shank Type - MachiningStraight
Shank Length1.3125 in
Depth:Dia. Ratio5xD
Drill Bit GroupingIndividual
Aircraft DrillNo
Material Grade - MachiningHeavy Duty
List Number400N
Drill Bit Size5/16 in
Measurement SystemFractional Inch
Finish - MachiningBlack, Gold
Drill Bit Point TypeSplit Point
Number of Flutes2
Maximum Drilling Depth5xD
Spiral DirectionRight Hand
Shank Dia.5/16 in
Overall Length4 1/2 in
Drill Length ClassJobber Length
Series400N
Sheeter DrillYes
Primary Material ApplicationHard Metal, Stainless Steel