Description

Alpha TCT Decking Drill & Countersink

The Alpha TCT Decking Drill & Countersink is an all-in-one drilling and countersinking tool designed to produce a professional, clean finish in timber decking.

It combines a tungsten carbide tipped (TCT) countersink with a parabolic HSS drill bit. The parabolic drill design improves chip extraction and allows increased feed rates and shorter cycle times.

An adjustable countersink depth allows the tool to be set for flush mounting or deep enough to accommodate a plug. The free-spinning stop collar incorporates a rubber O-ring to help protect the work surface from marks and scratches. When the collar stops spinning, the hole is complete.

Key Features

• Tungsten carbide tipped TCT countersink
• TCT countersink provides clean cutting and 3× life
• Parabolic HSS drill bit
• Improved chip extraction
• Allows increased feed rates and shorter cycle times
• Adjustable countersink depth
• Suitable for flush mounting or countersinking deep enough to accommodate a plug
• Free-spinning stop collar
• Rubber O-ring helps protect the work surface from marks and scratches
• Stop collar stops spinning when the hole is complete
• Anti-clog design improves visibility and debris removal
• 1/4″ quick-change shank
• Available for 8G, 10G, 12G and 14G flat-head decking screws

Suitable For

Sheffield specifically lists:

• Timber decking
• Hardwood
• Composite materials
• Woodworking

Available Sizes & Part Numbers

Sheffield’s decking countersink range confirms these four product codes.

Technical Specifications

I have deliberately left the #10 countersink diameter, angle and hole depth blank because the Sheffield #10 individual page wasn’t returned with enough information to verify those figures. The 3.6mm pilot size is supported by Sheffield’s corresponding #10 replacement drill listing.

The verified #8, #12 and #14 specifications come directly from their individual Sheffield pages.

Common Specifications

Replacement Pilot Drills