Drillco 51/64" Cobalt S&D Drill (1000C151)
Drillco 1000C151 51/64" Cobalt S&D Drill is part of the 1000C series, designed to expand the size capacity of 1/2" portable drill chucks. Made from durable cobalt steel, this drill is engineered to handle harder materials while maintaining a common flute and overall length for minimal adjustments during tool changes. It provides precise and reliable drilling performance for tough metalworking tasks.
51/64" drill diameter with 1/2" reduced shank and 3-flat design for handheld applications.
Spiral flute design improves chip ejection and coolant flow.
Heavy-duty core enhances strength and reduces breakage.
135° self-centering split point prevents walking for accurate starts.
Black and Gold surface treatment increases lubricity and drilling speed.
Standard 6" overall length for consistency.
Ideal for drilling harder metals with cobalt steel strength.
Minimizes downtime with uniform flute and length design.
Enhances drilling efficiency and tool longevity.
Suitable for handheld and machine use.
Technical Specifications:
Series: 1000C (Cobalt S&D)
Drill Size: 51/64"
Shank Size: 1/2" with 3 flats
Point Angle: 135° Split Point
Surface Treatment: Black and Gold
Overall Length: 6"
Material: Cobalt Steel
Application: Drilling harder metals
Origin: Made in USA
Product identification
- Brand: Drillco
- Model / MPN: 1000C151






