Description
Drillco 1000C5 5pc Cobalt Drill Bit Set, 9/16–1 x 8 from the 1000C Series offers a reliable solution for drilling hard metals using handheld equipment. Featuring a 1/2″ reduced shank design across all five cobalt bits, this set covers essential large sizes in 1/8″ increments, expanding the capability of standard portable drill chucks. Built from tough cobalt steel, these bits are optimized for strength, durability, and heat resistance in demanding environments.
Features:
- Includes five sizes: 9/16″, 11/16″, 13/16″, 15/16″, and 1″ diameters with 1/2″ reduced shank (3-flat design).
- Constructed from high-performance cobalt steel for long-lasting durability.
- Common flute and overall length simplify tool changes and maintain consistency.
- Spiral flute geometry enhances chip evacuation and coolant distribution.
- 135° split point ensures accurate starts and minimizes bit walking.
- Black and Gold surface treatment reduces friction and enhances cutting performance.
- Standard 6″ overall length for all bits in the set.
Benefits:
- Expands the capability of standard 1/2″ drill chucks to handle larger hole sizes.
- Withstands heat and wear for prolonged use in tough metal applications.
- Perfect for maintenance, fabrication, or industrial job site use.
Technical Specifications:
- Model: 1000C5
- Drill Sizes: 9/16″, 11/16″, 13/16″, 15/16″, 1″
- Material: Cobalt Steel
- Shank Size: 1/2″ (3-flat)
- Point Angle: 135° Split Point
- Surface Treatment: Black and Gold
- Overall Length: 6″ (each drill)
- Series: 1000C (Cobalt Silver & Deming)
- Application: Drilling hard metals
- Origin: Made in USA






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