Torus heavy duty jobber drill bit. High speed steel construction with a 135 degree split point and a tempered gold surface treatment. Parabolic flute design to produce close tolerances.
Technical Specs
ItemJobber Length Drill Bit
Decimal Equivalent0.3125
Material - MachiningHigh Speed Steel
Drill Bit Point Angle135 Degrees
Coolant FedNon-Coolant Through
Flute TypeParabolic
Flute Length3 3/16 in
Helix Angle35 Degrees /45 Degrees
Spiral DirectionRight Hand
Shank Dia.5/16 in
Overall Length4 1/2 in
Drill Length ClassJobber Length
Drill Bit GroupingIndividual
StandardsASME B94.11M, DIN 338
Drill Diameter Tolerance+0.0000 in/-0.0010 in
Web ThinningThinned
Primary Material ApplicationAluminum, Brass, Bronze, Cast Iron, Copper, Steel