Attributes

Key Value
Cutting DirectionLeft Hand
Decimal Equivalent0.2500 in
Depth:Dia. Ratio4xD
Drill Bit GroupingIndividual
Drill Bit Point Angle118 Degrees
Drill Bit Point TypeConventional Point
Drill Bit Size1/4 in
Drill Diameter Tolerance+0.0000 in/-0.0007 in
Drill Length ClassScrew Machine Length
Drill Point Length0.0751 in
Finish - MachiningBright (Uncoated)
Flute Length1 3/8 in
Flute TypeSpiral
Helix Angle28 Degrees
ItemScrew Machine Length Dr.
List Number157L
Material - MachiningHigh Speed Steel
Maximum Drilling Depth1 3/8 in
Measurement SystemFractional Inch
Number of Flutes2
Overall Length2 1/2 in
Primary Material Applic.Aluminum, Brass, Bronze.
Primary Material Applic.N, O, P
Series157L
Shank Dia.1/4 in
Shank Length1 1/8 in
Shank Type - MachiningStraight
Spiral DirectionLeft Hand
StandardsISO
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