This general purpose jobber length drill bit is made of high speed steel and has a 27/64 inch diameter, 1 7/16 inch long shank. It is for use with aluminum, brass, bronze, cast iron, copper, steel, and meets ASME standards. This 1899 series jobber drill bit has a black oxide finish, and has fractional inch measurements. It is non-coolant through with a 5⅜ inch length. Plus it has two 3 15/16 inch spiral flutes, a straight shank, and 118 Degrees conventional point.
Technical Specs
ItemJobber Length Drill Bit
Decimal Equivalent0.4219
Material - MachiningHigh Speed Steel
Drill Bit Point Angle118 Degrees
Coolant FedNon-Coolant Through
Flute TypeSpiral
Flute Length3 15/16 in
Helix Angle21 Degrees /34 Degrees
Spiral DirectionRight Hand
Shank Dia.27/64 in
Overall Length5 3/8 in
Drill Length ClassJobber Length
Drill Bit GroupingIndividual
StandardsASME B94.11M
Drill Diameter Tolerance+0.0000 in/-0.0010 in
Web ThinningThinned
Primary Material ApplicationAluminum, Brass, Bronze, Cast Iron, Copper, Steel
List Number1899
Drill Bit Size27/64 in
Measurement SystemFractional Inch
Finish - MachiningBlack Oxide
Drill Bit Point TypeConventional Point
Number of Coolant Holes0
Number of Flutes2
Maximum Drilling Depth1 11/16 in
Cutting DirectionRight Hand
Shank Type - MachiningStraight
Shank Length1 7/16 in
Depth:Dia. Ratio4xD
Drill Point Length0.1267 in
Series1899
Aircraft DrillNo
Sheeter DrillNo
Material Grade - MachiningGeneral Purpose
Primary Material Application ISO CodeK, N, P
Country of OriginUnited States
(subject to change)