Drill Bit Shank Type Comparison

Drill bit shanks vary in shape and size to match different tool systems. Selecting the correct shank type ensures proper fit, safe operation, and efficient power transfer.

Round Shanks

Round shanks are the most common type, fitting three-jaw drill chucks. Available in sizes matching the bit diameter or reduced to fit smaller chucks.

Hex Shanks

Hex shanks fit impact drivers and quick-change systems. The 1/4 inch hex is standard for impact-rated bits and accessories. Some hex shank bits also work in standard drill chucks.

SDS Systems

SDS-Plus and SDS-Max are slotted drive systems for rotary hammers. They allow axial bit movement for hammer action while maintaining positive torque engagement. Not interchangeable with each other or standard chucks.

Morse Taper

Morse taper shanks fit drill press spindles directly without a chuck. The tapered fit provides rigid, concentric mounting for precision drilling. Sizes range from MT1 (smallest) to MT5 (largest).