This W4 jobber drill bit set is made of high speed steel. It includes case and sizes 1/16, ¼, ⅛, 11/64, 13/64, 15/64, 3/16, 3/32, 5/32, 5/64, 7/32, 7/64, 9/64 inch, is designed for use with all materials, and meets ASME standards. This 1878 series jobber length drill bit set has a black oxide finish, and has fractional inch measurements. It is non-coolant through. Plus it has two spiral flutes, a straight shank, and a 135 Degrees split point.
Technical Specs
ItemDrill Set
Finish - MachiningBlack, Gold
Number of Drill Bits13
Drill Bit Point Angle135 Degrees
Flute TypeSpiral
Cutting DirectionRight Hand
Depth:Dia. Ratio4xD
Drill Length ClassJobber Length
Series1878
IncludesCase
Aircraft DrillNo
Drill Diameter Tolerance+0.0000/-0.0005 in to +0.0000/-0.007 in
Web ThinningWeb-Thinned
Primary Material ApplicationAll Materials
Drill Bit Size1/16 to 1/4 in
Smallest Drill Bit Size1/16 in
Material - MachiningHigh Speed Steel
Measurement SystemImperial
Drill Bit Sizes Included1/16 to 1/4 in
Drill Bit Point TypeSplit 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 - MachiningHeavy Duty
Primary Material Application ISO CodeP
Largest Drill Bit Size1/4 in
Country of OriginUnited States
(subject to change)