Screw Pilot Bits

These combination bits drill a pilot hole and countersink in one step.  They are ideal for installing screws flush with the surface and reducing splitting in wood.

What are screw pilot bits used for?
Screw... Read More

These combination bits drill a pilot hole and countersink in one step.  They are ideal for installing screws flush with the surface and reducing splitting in wood.

What are screw pilot bits used for?
Screw pilot bits are used to drill a pilot hole, countersink, and sometimes even drive the screw—all in one step. They help prevent splitting wood, especially near edges, and ensure that screws drive straight and flush. They're essential in woodworking, cabinetry, and any project requiring precise screw placement.

What’s the advantage of using a screw pilot bit instead of a standard drill bit?
Screw pilot bits offer greater efficiency and consistency. Unlike standard bits, they:

• Drill the correct diameter and depth for the screw shank

• Often include an integrated countersink for flush or recessed finishes

• Help maintain proper alignment and grip strength of the screw
  Some models also have adjustable stop collars for repeatable depth control.

How do I choose the right screw pilot bit for my project?
Choose your bit based on:

• Screw size – match the bit’s pilot diameter to your screw’s core

• Material – HSS or carbon steel bits are ideal for wood; use tougher bits for hardwoods or composites

• Combination type – some bits combine a pilot hole, countersink, and screwdriver tip for faster workflow
  Ensure the bit is compatible with your drill (usually ¼″ hex shank) and always drill at moderate speed to avoid burning or breakage.