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

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.

When you don't have exact alignment between the fastener and the bit, the ball end allows angled entry to turn screws in hard-to-reach areas. A retaining ring grips inside the recess to hold screws in place.

Strong and durable, these multipurpose bits are often used with power tools to install sheet metal screws.

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.

Bits have a different size at each end.

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.

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

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.

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

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

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

Turn two drive styles with one reversible bit. Remove and replace to change the tip.

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.

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

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

These are also known as TP3® bits.

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

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.

The tip is shaped like an eight-pointed star.

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

Turn the screws found in Apple devices.

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

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.

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

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.

Bits have a different size at each end.

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.

The toughest bits available, these withstand the shock and twisting force of impact drivers. A magnet holds the nut in place.

A retaining ring grips inside the recess to hold screws in place. These bits have a ball end that allows angled entry to drive screws in hard-to-reach areas.

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.

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

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

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 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.

Lock your bit into the adapter to prevent accidental disengagement. These adapters 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.

Lock your bit into the adapter to prevent accidental disengagement. These adapters attach to square-drive tools.

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

Designed to withstand high torque and force, these adapters fit the square drive on impact wrenches. Use with hex-shank bits (also known as insert bits).

Keep these caddies in your tool drawer or take them with you.

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

The extra-short leg of these keys fits in tight spaces other tools can't, and the ball end allows angled entry to turn screws in hard-to-reach spots.

These assorted keys have a ball end that allows angled entry to make good contact with the screw recess when standard-tip keys can’t. Use to turn screws in hard-to-reach spots.

Sets include an assortment of keys. These simple tools turn fasteners from either end and reach into tight spots.

The zinc coating on these keys resists salt-spray exposure. They turn fasteners from either end and reach into tight spots.

These assorted keys have a detent that grips inside the recess to ensure screws won’t fall off. The ball end allows angled entry to drive fasteners in hard-to-reach areas.

A bright finish makes these tools stand out, so they're less likely to be misplaced. They turn fasteners from either end and reach into tight spots.

These assorted keys have a ball end that allows angled entry to turn screws in hard-to-reach areas. The bright finish makes them easy to see and less likely to be misplaced.

A flexible joint provides access to fasteners in hard-to-reach areas.

These assorted keys are made of beryllium copper that is FM approved. They help meet OSHA requirements that specify nonsparking tools for locations where flammable vapors and combustible residues are present. Keys turn fasteners from either end and reach into tight spots.

The ball end allows angled entry to turn screws in hard-to-reach areas. Protect your stainless steel screws by using a stainless steel L-key. If steel flakes off a standard tool and into the recess, it can lead to rust and contamination. These keys eliminate that risk.

Sets include an assortment of stainless steel keys with a ball end that allows angled entry to turn screws in hard-to-reach areas. Use a stainless steel L-key to protect your stainless steel screws. If steel flakes off a standard tool and into the recess, it can lead to rust and contamination. These keys eliminate that risk.

The slots in these low-profile organizers are a different color than the base, so it's clear when tools are missing from your bench top or drawer. Made of polyethylene foam that resists solvents and petroleum products, organizers are designed to store L-key sets of specific sizes.

Select any key without unfolding the others in the set. The assorted keys turn multiple fastener sizes.

Keep a set of keys neatly in your tool box or pocket to turn multiple fastener sizes.

When working at heights, secure a lanyard to the ring on these tools and prevent drops. Sets include an assortment of keys for turning multiple fastener sizes.

The extra-long shaft lets you access fasteners in deep recesses. To change tips, use a hex key to loosen the set screw.

With a simple loop handle, these keys are the economical choice. They have a long shaft for reaching into tight spots and the T-handle provides a good grip for your whole hand when turning fasteners.

These assorted keys have a ball end that allows angled entry to make good contact with the screw recess when standard-tip keys can’t.

The ball-end tip secured to an extra-long shaft allows angled entry to turn screws in hard-to-reach areas. To change tips, use a hex key to loosen the set screw.

The ball-end tip has a retaining ring that grips inside the recess to hold screws in place and allows angled entry to turn fasteners in hard-to-reach areas.

The textured grip provides comfort, slip resistance, and maximum torque. These keys have a long shaft for reaching into tight spots to turn fasteners.

When a standard-tip key can't make good contact with the recess, a ball end allows angled entry to turn screws in hard-to-reach places. These keys have a textured grip that provides comfort, slip resistance, and maximum torque.

The T-handle provides a good grip for your whole hand and the long shaft reaches into tight spots.

Sets include an assortment of short keys that fit in tight spaces where others can't.

The long shaft has a ball end for angled entry to turn screws in hard-to-reach areas. The short shaft provides additional torque.

These assorted keys have a ball end that allows angled entry to make good contact with the screw recess when standard-tip keys can’t. The textured grip provides comfort, slip resistance, and maximum torque.

Sets include an assortment of keys with a long shaft for more reach and a short shaft for more torque. Use stainless steel keys to protect your stainless steel screws. If steel flakes off a standard tool and into the recess, it can lead to rust and contamination. These keys eliminate that risk.

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

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

When working in tight spaces, these short drivers fit where others can't. Bits have a different tip at each end and snap into the shaft, which is also a nutdriver.

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.

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

LEDs light the tip so you can use these tools in dark areas.

The short bit on these sockets fits in spaces where height clearance is limited.

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

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

The short bit on these sockets fits in spaces where height clearance is limited.

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

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

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