Heavy-duty extra length drills. Features a black oxide finish, 118 degree notch point, high speed steel construction. Size 5/16 inch, length 8 inches, flute length 5-1/2 inches.
Technical Specs
ItemExtra Long Drill Bit
Decimal Equivalent0.3125
Material - MachiningHigh Speed Steel
Drill Bit Point Angle118 Degrees
Flute TypeSpiral
Flute Length5 1/2 in
Helix Angle28 Degrees
Spiral DirectionRight Hand
Shank Dia.5/16 in
Overall Length8 in
Drill Length ClassExtra Long
Coolant FedNon-Coolant Through
Drill Diameter Tolerance+0.0000 in/-0.0010 in
Primary Material ApplicationCast Iron, Steel
List Number120X
Drill Bit Size5/16 in
Measurement SystemFractional Inch
Finish - MachiningBlack Oxide
Drill Bit Point TypeNotched Point
Number of Flutes2
Maximum Drilling Depth5 1/2 in
Cutting DirectionRight Hand
Shank Type - MachiningStraight
Shank Length2 1/2 in
Depth:Dia. Ratio4xD
Drill Point Length0.0939 in
Drill Bit GroupingIndividual
Material Grade - MachiningGeneral Purpose
Primary Material Application ISO CodeK, P
Country of OriginUnited States
(subject to change)