This W4 jobber length drill bit is made of high speed steel and has a 18 mm diameter, 61 mm long shank. It is for use with aluminum, brass, bronze, cast iron, copper, steel, and meets the standards for DIN 338. This 1898 series jobber length drill bit has a bright (uncoated) finish, and has metric measurements. It is non-coolant through with a 191mm length. Plus it has two 130mm spiral flutes, a straight shank, and 118 Degrees conventional point.
Technical Specs
ItemJobber Length Drill Bit
Decimal Equivalent0.7087
Material - MachiningHigh Speed Steel
Drill Bit Point Angle118 Degrees
Coolant FedNon-Coolant Through
Flute TypeSpiral
Flute Length130.00 mm
Helix Angle21 Degrees /34 Degrees
Spiral DirectionRight Hand
Shank Dia.18 mm
Overall Length191.00 mm
Drill Length ClassJobber Length
Drill Bit GroupingIndividual
StandardsDIN 338
Drill Diameter Tolerance+0.0000 in/-0.0012 in
Web ConstructionTapered
Material Grade - MachiningW4
Primary Material Application ISO CodeK, N, P
Drill Bit Size18.00 mm
Measurement SystemMetric
Finish - MachiningBright (Uncoated)
Drill Bit Point TypeConventional Point
Number of Coolant Holes0
Number of Flutes2
Maximum Drilling Depth2 53/64 in
Cutting DirectionRight Hand
Shank Type - MachiningStraight
Shank Length61 mm
Depth:Dia. Ratio4xD
Drill Point Length0.2129 mm
Series1898
Aircraft DrillNo
Sheeter DrillNo
Web ThinningWeb-Thinned
Primary Material ApplicationAluminum, Brass, Bronze, Cast Iron, Copper, Steel