This W4 jobber length drill bit is made of high speed steel and has a 1/16 inch diameter, one-inch long shank. It is for use with aluminum, cast iron, steel, and meets ASME standards. This 1898T series jobber length drill bit has a TiN finish, and has fractional inch measurements. It is non-coolant through with a two-inch length. Plus it has two one-inch spiral flutes, a straight shank, and 118 Degrees conventional point.
Technical Specs
ItemJobber Length Drill Bit
Decimal Equivalent0.0781
Material - MachiningHigh Speed Steel
Drill Bit Point Angle118 Degrees
Coolant FedNon-Coolant Through
Flute TypeSpiral
Flute Length1 in
Helix Angle21 Degrees /34 Degrees
Spiral DirectionRight Hand
Shank Dia.1/16 in
Overall Length2 in
Drill Length ClassJobber Length
Drill Bit GroupingIndividual
StandardsASME B94.11M
Drill Diameter Tolerance+0.0000 in/-0.0005 in
Web ConstructionTapered
Material Grade - MachiningW4
Primary Material Application ISO CodeK, N, P
Drill Bit Size5/64 in
Measurement SystemFractional Inch
Finish - MachiningTiN
Drill Bit Point TypeConventional Point
Number of Coolant Holes0
Number of Flutes2
Maximum Drilling Depth5/16 in
Cutting DirectionRight Hand
Shank Type - MachiningStraight
Shank Length1.0000 in
Depth:Dia. Ratio4xD
Drill Point Length0.0235 in
Series1898T
Aircraft DrillNo
Sheeter DrillNo
Web ThinningWeb-Thinned
Primary Material ApplicationAluminum, Cast Iron, Steel
List Number1898T
Country of OriginUnited States
(subject to change)