Heavy-duty high-speed steel construction with a 135 degree split point for drilling in tougher materials. Available in a black and gold finish, black oxide finish and titanium nitride coating. Black and gold drills are excellent for non-ferrous applications and low tensile steel. Black oxide finish increases wear resistance and adds lubricity to improve chip flow. Titanium nitride (TiN) coating adds lubricity and hardness, enhancing chip flow, finish hole quality and drill life.
Technical Specs
ItemJobber Length Drill Bit
Decimal Equivalent0.4688
Material - MachiningHigh Speed Steel
Drill Bit Point Angle135 Degrees
Coolant FedNon-Coolant Through
Flute TypeSpiral
Flute Length4 5/16 in
Helix Angle28 Degrees
Spiral DirectionRight Hand
Shank Dia.15/32 in
Overall Length5 3/4 in
Drill Length ClassJobber Length
Drill Bit GroupingIndividual
StandardsNAS 907 Type B
Drill Diameter Tolerance+0.0000 in/-0.0010 in
Web ThinningThinned
Primary Material ApplicationCast Iron, Stainless Steel, Steel, Tool and Die Steel