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 Equivalent0.25
Material - MachiningHigh Speed Steel
Drill Bit Point Angle135 Degrees
Coolant FedNon-Coolant Through
Flute TypeParabolic
Flute Length2 3/4 in
Helix Angle35 Degrees /45 Degrees
Spiral DirectionRight Hand
Shank Dia.1/4 in
Overall Length4 in
Drill Length ClassJobber Length
Drill Bit GroupingIndividual
StandardsASME B94.11M, DIN 338
Drill Diameter Tolerance+0.0000 in/-0.0007 in
Web ThinningThinned
Primary Material ApplicationAluminum, Brass, Bronze, Cast Iron, Copper, Steel
List Number1872
Drill Bit Size1/4 in
Measurement SystemFractional Inch
Finish - MachiningBlack and Gold
Drill Bit Point TypeSplit Point
Number of Coolant Holes0
Number of Flutes2
Maximum Drilling Depth2 in
Cutting DirectionRight Hand
Shank Type - MachiningStraight
Shank Length1 1/4 in
Depth:Dia. Ratio8xD
Drill Point Length0.0518 in
Series1872
Aircraft DrillNo
Sheeter DrillNo
Material Grade - MachiningHigh Performance
Primary Material Application ISO CodeK, N, P
Country of OriginUnited States
(subject to change)