This M42 jobber length drill bit is made of cobalt and has a 27/64 inch diameter, 1 7/16 inch long shank. It is for use with steel, titanium, tool and die steel, and meets the standards for NAS 907 Type J. This 55TN series jobber length drill bit has a TiN 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 a 135 Degrees split point.
Technical Specs
ItemJobber Length Drill Bit
Decimal Equivalent0.4219
Material - MachiningCobalt
Drill Bit Point Angle135 Degrees
Coolant FedNon-Coolant Through
Flute TypeSpiral
Flute Length3 15/16 in
Helix Angle28 Degrees
Spiral DirectionRight Hand
Shank Dia.27/64 in
Overall Length5 3/8 in
Drill Length ClassJobber Length
Drill Bit GroupingIndividual
StandardsNAS 907 Type J
Drill Diameter Tolerance+0.0000 in/-0.0010 in
Web ThinningThinned
Primary Material ApplicationStainless Steel, Steel, Titanium, Tool and Die Steel