This W4 drill bit set is made of high speed steel. It includes case and sizes 1/16, ½, ¼, ⅛, 11/32, 13/32, 15/32, 3/16, 3/32, ⅜, 5/16, 5/32, 7/16, 7/32 inch, is designed for use with all materials, and meets ASME standards. This 1898T series jobber length drill bit set has a TiN finish. It is non-coolant through. Plus it has two spiral flutes, a straight shank, and 118 Degrees radial point drill point.
Technical Specs
ItemDrill Set
Finish - MachiningTiN
Number of Drill Bits29
Drill Bit Point Angle118 Degrees
Flute TypeSpiral
Cutting DirectionRight Hand
Depth:Dia. Ratio4xD
Drill Length ClassJobber Length
Series1898T
IncludesCase
Aircraft DrillNo
Drill Diameter Tolerance+0.0000/-0.0005 in to +0.0000/-0.0010 in
Web ThinningWeb-Thinned
Primary Material ApplicationAlloy, Carbon Steel, Cast Iron