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 1878 series jobber length drill bit set has a bright (uncoated) 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 - MachiningBright (Uncoated)
Number of Drill Bits29
Drill Bit Point Angle118 Degrees
Flute TypeSpiral
Cutting DirectionRight Hand
Depth:Dia. Ratio4xD
Drill Length ClassJobber Length
Series1898
IncludesCase
Aircraft DrillNo
Drill Diameter Tolerance+0.0000/-0.0005 in to +0.0000/-0.0010 in
Web ThinningWeb-Thinned
Primary Material ApplicationAll Materials
Drill Bit Size1/16 to 1/2 in
Smallest Drill Bit Size1/16 in
Material - MachiningHigh Speed Steel
Measurement SystemImperial
Drill Bit Sizes Included1/16 to 1/2 in
Drill Bit Point TypeRadial Point
Number of Flutes2
Spiral DirectionRight Hand
Drill Bit GroupingSet
Shank Type - MachiningStraight
Drill Bit Case TypeMetal Index
StandardsASME B94.11M
Coolant FedNon-Coolant Through
Web ConstructionTapered
Material Grade - MachiningGeneral Purpose
Primary Material Application ISO CodeK, P
Largest Drill Bit Size1/2 in
Country of OriginUnited States
(subject to change)