Diablo DHS4BITCT Carbide-Tipped Pilot Drill Bit, 4 in. Hole Saw Bit

Diablo DHS4BITCT Carbide-Tipped Pilot Drill Bit, 4 in. Hole Saw Bit

The Diablo DHS4BITCT is a high-performance Carbide-Tipped Pilot Bit engineered for faster cutting and long service life in highly abrasive materials. This 4 in. (105mm) pilot bit is designed to fit all Diablo deep cut hole saws and is compatible with Diablo's Snap-Lock Plus™ Mandrel system, allowing for a quick, tool-free change with no down time. With a 1/4 in. hex shank and a 9/32" diameter, this pilot bit is purpose-built for professionals who regularly drill through fiber cement board and ceramic materials where standard pilot bits wear out quickly.

Key Features

• Size: 4" (105mm) bit fits Diablo deep cut hole saws for compatibility across the Diablo hole saw lineup.
• Durable Construction: Carbide-Tipped design for long life when drilling highly abrasive materials such as fiber cement and ceramic materials.
• Snap-Lock Plus™ Compatible: Fits the Snap-Lock Plus™ mandrel system, allowing a quick and easy change with no down time on the jobsite.
• Shank: 1/4 in. hex shank for secure, slip-resistant chucking in standard drills and drivers.
• Diameter: 9/32" pilot bit diameter for precise, controlled starting cuts.
• Material-Specific Cutting: Formulated to cut through ceramics and fiber cement without premature wear, outperforming standard steel pilot bits in these abrasive materials.

Technical Specifications

• Shank: 1/4 in. hex
• Diameter: 9/32"
• Bit Length: 4 in. (105mm)
• Mandrel Compatibility: Snap-Lock Plus™ mandrel system
• Packaging: 1 ea

Typical Applications

• Drilling Fiber Cement Siding and Board
• Drilling Ceramic Materials
• Pilot Guidance for Deep-Cut Hole Saw Applications
• Professional Remodeling and New Construction

Why Diablo?

Diablo engineers its Carbide-Tipped Pilot Bits specifically for the demands of abrasive-material drilling, pairing a wear-resistant carbide tip with the fast-swap convenience of the Snap-Lock Plus™ mandrel system. The result is a pilot bit that maintains cutting performance over repeated use in fiber cement and ceramic materials, reducing downtime for professionals switching bits on the job. Backed by precise manufacturing to the 1/4 in. hex shank and 9/32" diameter specification, this bit delivers consistent, reliable starts for every deep-cut hole saw application.