This W4 jobber length drill bit is made of high speed steel and has a 1¼ inch diameter, 22 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 38mm length. Plus it has two 16mm spiral flutes, a straight shank, and 118 Degrees conventional point.
Technical Specs
ItemJobber Length Drill Bit
Decimal Equivalent0.0492
Material - MachiningHigh Speed Steel
Drill Bit Point Angle118 Degrees
Coolant FedNon-Coolant Through
Flute TypeSpiral
Flute Length16.00 mm
Helix Angle21 Degrees /34 Degrees
Spiral DirectionRight Hand
Shank Dia.1 1/4 in
Overall Length38.00 mm
Drill Length ClassJobber Length
Drill Bit GroupingIndividual
StandardsDIN 338
Drill Diameter Tolerance+0.0000 in/-0.0005 in
Web ConstructionTapered
Material Grade - MachiningW4
Primary Material Application ISO CodeK, N, P
Drill Bit Size1.25 mm
Measurement SystemMetric
Finish - MachiningBright (Uncoated)
Drill Bit Point TypeConventional Point
Number of Coolant Holes0
Number of Flutes2
Maximum Drilling Depth3/16 in
Cutting DirectionRight Hand
Shank Type - MachiningStraight
Shank Length22 mm
Depth:Dia. Ratio4xD
Drill Point Length0.0148 mm
Series1898
Aircraft DrillNo
Sheeter DrillNo
Web ThinningWeb-Thinned
Primary Material ApplicationAluminum, Brass, Bronze, Cast Iron, Copper, Steel
List Number1898
Country of OriginUnited States
(subject to change)