1/2" Screwdrivers | McMaster-Carr

Sets include an assortment of drivers that are drilled all the way through the shaft and handle for turning nuts on any length of threaded rod. They have a magnet in the tip to hold nuts in place.

Pass-Through Fastener-Holding Nutdrivers

The shaft and handle are drilled all the way through for turning nuts on any length of threaded rod. These drivers have a magnet in the tip to hold nuts in place.

Adjustable-Length Nutdriver Sets

Press down on the handle’s collar to adjust the shaft length or remove and replace the shaft to change sizes. Sets include a handle and multiple shafts.

Fastener-Holding Nutdrivers

A magnet in the tip holds nuts in place.

Electrical-Insulating Nutdriver Sets

The assorted drivers in these sets have an insulated handle and shaft that protect against shock from accidental contact with live electrical circuits. They are tested to 1,000 volts to meet ASTM and IEC standards.

Electrical-Insulating Nutdrivers

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 ASTM and IEC standards.

Nutdrivers for Stainless Steel Fasteners

Protect your stainless steel fasteners by using a stainless steel driver. If steel flakes off a standard tool and into the threads, it can lead to rust and contamination. These drivers eliminate that risk.

Nonsparking Nutdrivers

Made of aluminum-bronze that is FM approved, these drivers help meet OSHA requirements that specify nonsparking tools for locations where flammable vapors and combustible residues are present.

Screwdriver Bits and Adapters

Ball-End Hex Bits

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.

Fastener-Holding Nutdriver Bits

A magnet or retaining ring holds the nut in place.

Nutdriver Bits

Turn hex nuts and cap screws.

Bit Assortments

Assortments contain bits with multiple drive styles.

Ball-End Hex Bit Sets

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.

L-Keys

Turn fasteners from either end and reach into tight spots.

L-Key Sets

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

Ball-End L-Key Sets

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.

Ball-End L-Keys

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.

Ball-End High-Visibility L-Keys

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 bright gold-plated finish that makes them easy to see and less likely to be misplaced.

High-Visibility L-Keys

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.

L-Keys for Stainless Steel Screws

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.

Nonsparking L-Keys

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

T-Handle Keys

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

Looped T-Handle Keys

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.

T-Handle Keys for Stainless Steel Screws

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

Electrical-Insulating T-Handle Keys

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 IEC and ASTM standards. They have a long shaft that reaches into tight spots to turn fasteners.

Nut Starters

Start and initially turn nuts. These tools are not intended for final tightening or removal of fasteners.

Ball-End Driver Shafts

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.

Sockets

Hex Bit Sockets

Electrical-Insulating Hex Bit Sockets

Insulated to protect against accidental contact with live electrical circuits, these sockets are tested to 1,000 volts to meet ASTM F1505 and IEC 60900.