The toughest bits available, these withstand the shock and twisting force of impact drivers.

Protect your stainless steel screws by using a stainless steel bit. If steel flakes off a standard bit and into the recess, it can lead to rust and contamination. These bits eliminate that risk.

A retaining ring at the tip grips inside the recess to ensure screws won't slip off the bit.

Less likely to crack or shatter under high torque than standard bits, these are often used with power tools to install machine screws.

Ribs forged into the wings of these bits grip the screw recess to reduce stripping. They're also known as ACR® bits.

Drive screws with both ends of these bits. Use with hand drivers.

Remove screws in hard-to-reach places. A spring-loaded sleeve guides bits onto the screw head and keeps them from slipping out.

A wide tip makes good contact in shallow and coated screw recesses, such as those filled with paint.

The toughest bits available, these withstand the shock and twisting force of impact drivers.

When you don't have exact alignment between the fastener and the tool, the ball end allows angled entry to turn screws in hard-to-reach areas.

Protect your stainless steel screws by using a stainless steel bit. If steel flakes off a standard bit and into the recess, it can lead to rust and contamination. These bits eliminate that risk.

Strong and durable, these multipurpose bits are for use with bit screwdrivers. They are often used with power tools to install sheet metal screws.

The small-diameter shaft can access screws in narrow recessed holes.

Bits have a different size at each end.

Ribs forged into the wings of these offset-cross-shaped bits grip the screw recess to reduce stripping. They are also known as ACR® bits.

An opening at the tip accommodates the pin in the recess of tamper-resistant hex screws. These are also known as pin-in-hex or pin-in-socket bits.

The toughest bits available, these withstand the shock and twisting force of impact drivers. Designed for screws with a square recess in the head, they are also known as Robertson bits.

Protect your stainless steel screws by using a stainless steel bit. If steel flakes off a standard bit and into the recess, it can lead to rust and contamination. These bits eliminate that risk.

An exterior stop collar prevents fasteners from being driven too deep. Use with soft materials such as drywall, wood, and fiberboard.

Bits have a different size at each end. An opening at the tips accommodates the pin in the recess of tamper-resistant Torx screws. These are also known as pin-in-Torx bits.

Strong and durable, these multipurpose bits are for use with bit screwdrivers.

The six rounded points fit the star-shaped recess of Torx-Plus screws. These bits have a similar profile to Torx but are not recommended for use with standard Torx screws.

These bits are shaped like a 12-pointed star. They're also known as XZN bits.

A three-winged tip fits triangular slotted screw recesses.

An opening at the tip accommodates the pin in the recess of tamper-resistant pentalobe screws.

These bits provide a secure grip on the Phillips/slotted combination-drive screws in electrical equipment.

Also known as Bristol bits, these have a knurled-end shank that allows finger tightening.

Also known as Reed and Prince bits.

Also known as Polydrive bits.

Turn screws that have the tamper-resistant asymmetrical drive exclusive to McMaster-Carr.

These are also known as known as butterfly and Type G bits.

Because they make contact on the flat sides of fasteners rather than only on the corners, these magnetic bits significantly reduce slipping and stripping. They’re also known as lobular bits.

Turn hex nuts and cap screws.

When you don't have exact alignment between the fastener and the tool, the ball end allows angled entry to turn screws in hard-to-reach areas.

Assortments contain bits with multiple drive styles.

The toughest bits available, these withstand the shock and twisting force of impact drivers.

An opening at the tip accommodates the pin in the recess of tamper-resistant hex screws. These are also known as pin-in-hex or pin-in-socket bits.

Designed for the fasteners used in electronics assembly, the tip of these bits has slightly sharper corners than Phillips style.

The six rounded points fit the star-shaped recess of Torx-Plus screws. These bits have a similar profile to Torx but are not recommended for use with standard Torx screws.

A magnet holds the nut in place.

Use with screws that have two drilled holes.

Also known as Bristol bits, these have a knurled-end shank that allows finger tightening. They can also be used with the included screwdriver.

A three-winged tip fits triangular slotted screw recesses.

Lock your bit into the adapter to prevent accidental disengagement. These adapters hold hex-shank bits (also known as insert bits) in powered tools.

Bend these adapters up to 90° to access hard-to-reach fasteners. Use them to hold hex-shank bits (also known as insert bits) in powered tools.

A magnetic ring at the end of the adapter holds flat-head screws in place to ensure good contact between the bit and screw. Use these adapters to hold hex-shank bits (also known as insert bits) in powered tools.

Attach these adapters to square-drive tools.

Use a 4 mm bit in a bit driver that's designed for 1/4" bits.

These adapters are designed to withstand the high torque of impact drivers. They hold hex-shank bits (also known as insert bits).

Mount the magnetic base to walls, cabinets, and other steel surfaces.

Fit these small cases comfortably in your pocket.

Lock the bit into the chuck to prevent accidental disengagement.

Insert a bit into the shaft and a magnet holds it in place.

The bit holder ratchets so you can drive fasteners when there's little space to move the handle. A magnet or retaining ring secures the bit in the holder.

A ratchet mechanism turns fasteners more quickly than a standard bit driver. Insert a bit into the shaft and a magnet holds it in place.

Bend the shaft around obstructions to reach fasteners that standard and offset screwdrivers can’t.

Bits have a different tip at each end and snap into the shaft, which is also a nutdriver.