A 5mm drill bit is 0.1969 inches, which is closest to a 13/64″ fraction. Learn when to use the exact metric size and when you can safely substitute.

A brad point drill bit is a woodworking bit with a sharp center spur and side cutters for clean, precise holes. Learn when to use it and when to skip it.

An 8mm drill bit is 0.3150 inches. Learn when to use the exact metric size vs. The 5/16″ substitute, and why the wrong choice strips threads or jams bolts.

Find the right drill bit for plasterboard. Learn why HSS bits win, when to pre-drill, and how to avoid the cracks that ruin a wall. Read the guide.

Find the right drill bit for stainless steel by matching bit material, point geometry, and speed. Get step-by-step guidance and avoid common failures.

The correct drill bit for a 5/16-18 tap is a 17/64″ bit or an F drill. Learn why this size is standard, when to change it, and the tools that do it all in one step.

Find the correct drill bit for a #8 screw. This guide covers pilot holes, clearance holes, and when to skip them, with specs from ASME standards and manufacturer data.

Discover the correct drill bit for a 3/8 tap: the 5/16″ bit. Learn why size is critical for strong threads and when to use a combo tool. Get the guide now!

The correct drill bit for a 1/4-20 tap is a #7 (0.”) or 13/64″ bit. Learn why, plus how to handle STI taps, material choices, and avoid broken tools.

Stop splits and stripped threads! Discover the correct drill bit for a 10 screw based on your material. Our expert guide makes pilot holes simple. Read today!

Spot a concrete drill bit by its carbide head, SDS-plus shank, wear mark, and flute design. Learn how to identify the right bit for masonry and concrete.

Learn what a metal drill bit looks like by exploring its specific geometry, body shape, and cutting features. See the full visual breakdown now.