AT Combination Drill & Tap

Alfa Tools produces combination drill and tap bits—innovative 2-in-1 tools that drill pilot holes and cut threads in a single pass. Constructed from high-speed steel (HSS) with integrated drilling and tapping sections, these versatile bits eliminate the need for separate tools, cutting operation time by 50–70% and ensuring perfect pilot hole alignment. Available in a full range of UNC (Unified National Coarse) and UNF (Unified National Fine) thread sizes from 4-40 to 1/2-20, they’re ideal for use with aluminum, brass, mild steel, and plastic.