Attributes

Key Value
Aircraft DrillYes
Coolant FedNon-Coolant Through
Cutting DirectionRight Hand
Decimal Equivalent0.3125 in
Depth:Dia. Ratio4xD
Drill Bit GroupingIndividual
Drill Bit Point Angle135 Degrees
Drill Bit Point TypeSplit Point
Drill Bit Size5/16 in
Drill Diameter Tolerance+0.0000 in/-0.0010 in
Drill Length ClassExtra Long
Drill Point Length0.0647 in
Finish - MachiningBlack Oxide
Flute Length3 3/16 in
Flute TypeSpiral
Helix Angle28 Degrees
ItemExtra Long Drill Bit
List Number912
Material - MachiningHigh Speed Steel
Material Grade - Machin.High Performance
Maximum Drilling Depth3 3/16 in
Measurement SystemFractional Inch
Number of Flutes2
Overall Length12 in
Primary Material Applic.Cast Iron, Steel
Primary Material Applic.K, P
Series912
Shank Dia.5/16 in
Shank Length8 13/16 in
Shank Type - MachiningStraight
Spiral DirectionRight Hand
StandardsNAS 907 Type B
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