1/2 Cobalt Oxide/Gold Finish 135 Deg. Split Point Heavy-Duty Screw Machine Drill

M40CO screw machine length drill bits are of a heavy duty design, recommended for use when drilling difficult materials and applications. They are manufactured from High Speed cobalt, suitable for drilling hard materials including tool steel, and have a bronze oxide finish to stop workpiece material from sticking to the cutting surfaces of the tool, so you get a more accurate hole. The 135 degree split point is an aid to self-centering, so no drill wander over the workpiece surface, and reduces the force needed to drill down. M40CO drill bits are available in fractional sizes from 1/16? to 3/4? in 1/64? increments.

ORDER IN MULTIPLES of 6

Precision Twist Drill

Unit Size: 1

Features Back To Top

    • Low thrust design self centering Split Point for easier penetration
    • Cobalt base material with Bronze Oxide for wear resistance and lubricity

Tech Specs Back To Top

Fractional Diameter 1/2"
Material Grade M40
Type Screw Machine Drill Bit
Point Angle 135 Deg.
Coating/Finish Bronze
Cutting Direction Right
Series M40CO
Metric Size 12.70 mm
Overall Length 3-3/4"
Drill Bit Grade Heavy Duty
Flute Length 2-1/4"
Shank Style Cylindrical shank
Material Cobalt
Overall Length Inches 3.75"
Shank Type Straight
Specification Designation ANSI
Brand Precision Twist Drill
Decimal Size 0.5000"
Overall Length Metric 95.25 mm
Fractional Size 1/2"