This W4 jobber drill bit set is made of high speed steel. It includes a metal drill index and is designed for use with alloy steel, carbon steel, cast iron, and meets ASME standards. This 1898 series jobber length drill bit set has a bright (uncoated) finish, and has fractional inch measurements. It is non-coolant through. Plus it has two spiral flutes, a straight shank, and 118 Degrees radial point drill point.
Technical Specs
ItemJobber Drill Bit Set
Finish - MachiningBright (Uncoated)
Number of Drill Bits115
Drill Bit Point Angle118 Degrees
Flute TypeSpiral
Cutting DirectionRight Hand
Depth:Dia. Ratio4xD
Drill Length ClassJobber Length
Series1898
IncludesMetal Drill Index
Aircraft DrillNo
Drill Diameter Tolerance+0.0000 in/-0.0005 in to +0.0000 in/-0.0010 in
Web ThinningWeb-Thinned
Primary Material ApplicationAlloy Steel, Carbon Steel, Cast Iron
Largest Drill Bit Size1/2 in
Material - MachiningHigh Speed Steel
Measurement SystemFractional Inch
Drill Bit Sizes Included#1, #10, #11, #12, #13, #14, #15, #16, #17, #18, #19, #2, #20, #21, #22, #23, #24, #25, #26, #27, #28, #29, #3, #30, #31, #32, #33, #34, #35, #36, #37, #38, #39, #4, #4-1/2, #40, #41, #42, #43, #44, #45, #46, #47, #48, #49, #5, #50, #51, #52, #53, #54, #55, #56, #57, #58, #59, #6, #60, #7, #8, #9, 1/16 in, 1/2 in, 1/4 in, 1/8 in, 11/32 in, 11/64 in, 13/32 in, 13/64 in, 15/32 in, 15/64 in, 17/64 in, 19/64 in, 21/64 in, 23/64 in, 25/64 in, 27/64 in, 29/64 in, 3/16 in, 3/32 in, 3/8 in, 31/64 in, 5/16 in, 5/32 in, 5/64 in, 7/16 in, 7/32 in, 7/64 in, 9/32 in, 9/64 in, A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z
Drill Bit Point TypeRadial Point
Number of Flutes2
Spiral DirectionRight Hand
Drill Bit GroupingSet
Shank Type - MachiningStraight
Drill Bit Case TypeMetal Drill Index
StandardsASME B94.11M
Coolant FedNon-Coolant Through
Web ConstructionTapered
Material Grade - MachiningW4
Primary Material Application ISO CodeP, K
Smallest Drill Bit Size1/16 in
Country of OriginUnited States
(subject to change)
