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

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

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

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.

Thread these bits directly into your driving tool for minimal wobble in assembly applications.

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

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.

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

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.

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're designed for screws with a square recess in the head and 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.

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

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.

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.

Use with screws that have two drilled holes.

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.

While screws with a square/Phillips combination drive can be turned with either a square or Phillips bit, these make the best contact so you can apply high torque without slipping and stripping the recess. They are also known as Quadrex bits.

These are also known as TP3® bits.

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

These bits have a 4 mm HIOS shank. To fit in a 1/4" hex shank driver, use an adapter.

Also known as Polydrive bits.

Grip the indentations on the head of tri-groove fasteners.

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

A magnet or retaining ring holds the nut in place.

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.

Assortments contain bits with multiple drive styles.

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

These bits are also known as nut setters.

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

The slightly tapered tip wedges into the screw recess for a secure hold. These are also known as Torx-Align bits.

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

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 have an offset cross shape.

A three-winged tip fits triangular slotted screw recesses.

Use hex-shank bits (also known as insert bits) in powered tools.

The head is angled 90° to drive fasteners in tight spaces. Use these adapters 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.

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

Attach these adapters to square-drive tools.

Insert these adapters into your SDS-drive rotary hammer to use it with hex-shank bits (also known as insert bits).

Fit these small cases comfortably in your pocket.

Store a variety of sizes and styles of bits and adapters in one compact tray.

A ratchet mechanism allows you to drive fasteners when there's little space to move the handle.

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.

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

Bits are held in place with a retaining ring or set screw rather than a magnet, so the tool won't attract loose metal parts and shavings.

Also known as ESD-safe bit screwdrivers, the handle drains static away from your application, preventing buildup from electrostatic discharge (ESD) that can damage sensitive equipment.

An insulated handle and shafts protect against shock from accidental contact with live electrical circuits. These tools are tested to 1,000 volts to meet IEC 60900.

A scaled-down version of standard changeable-shaft screwdrivers, these tools are shorter, slimmer, and easy to take with you. Remove and replace the shaft to use a different tip size.

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

These sets include an adjustable torque driver, bits for different drive styles, and a socket adapter.

Choose a handle based on torque, and a shaft with the size you need.

Create your own tool by attaching these shafts to a handle, or use with socket wrenches and power tools. They have a ball end that allows angled entry to make good contact with the recess when a standard-tip shaft can’t.

Use these ceramic-tipped screwdrivers for adjusting sensitive electronic components such as capacitors and resistors. They're completely nonconductive and nonmagnetic so there's no risk of short-circuiting or creating magnetic interference. Remove and replace the shafts to use a different size or drive style.

Use sockets with tools that accept hex shanks, such as impact drivers and power drills.

Turn sockets with a bit screwdriver.

Extend your socket's reach.

Insulated to protect against accidental contact with live electrical circuits, these extensions are tested to 1,000 volts to meet IEC 60900.

The square drive has a rounded shape that allows the extension to pivot inside the socket opening and turn it from an angle.

Convert from one square drive size to another.

These adapters are insulated to protect against accidental contact with live electrical circuits. They are tested to 1,000 volts to meet IEC 60900.

Set a desired torque within the range.

Attach to your socket for a longer reach.

Convert from one square drive size to another.

Prevent overtightening that can damage fasteners. These adapters spring back slightly when the set torque is reached.

Extra-long bits allow access to hard-to-reach fasteners.

Extra-long bits allow access to hard-to-reach fasteners.

Extra-long bits allow access to hard-to-reach fasteners.

These sockets are also known as pin-in-hex or pin-in-socket bits.

These sockets are also known as pin-in-Torx bits.

Keep a convenient mix of hex, Torx, Phillips, and slotted bit sockets on hand.

Extra-long bits allow access to hard-to-reach fasteners.

Extra-long bits allow access to hard-to-reach fasteners.

These sockets are also known as pin-in-Torx bits.

Convert from one square drive size to another.