Spline Drivers | McMaster-Carr

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1,896 Products

Drivers, Keys, and Bits

6-Flute Spline Bit Sets

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

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.

Sockets

6-Point Sockets

The hex shape achieves the best possible grip on hex fasteners to prevent rounding their points.

Nonsparking 6-Point Sockets

Made of aluminum-bronze, these sockets satisfy OSHA requirements that specify nonsparking tools for locations where flammable vapors and combustible residues are present.

Stubby 6-Point Sockets

These short sockets fit spaces where height clearance is limited.

Extra-Deep 6-Point Sockets

With more than double the clearance of standard sockets, these sockets access nuts on extra-long bolts.

6-Point Flex Sockets

Pivot the head to access fasteners from an angle.

Open-End 6-Point Sockets

Slide the open side of these sockets over a tube or hose to adjust a nut that’s already installed.

Nonmarring 6-Point Sockets

With a plastic insert, these sockets firmly grip hex nuts and bolts without rounding them or scratching highly polished finishes.

6-Point Stainless Steel Sockets

Designed for use with stainless steel fasteners, these sockets are more corrosion resistant than steel sockets and less likely to flake.

Fastener-Holding 6-Point Sockets

Hold fasteners securely in place as you drive them.

Extended 6-Point Flex Sockets

Eliminate the risk of your socket falling while reaching into your workspace with these flex sockets that have an integrated extension.

12-Point Sockets

Electrical-Insulating 12-Point Sockets

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

12-Point Flex Sockets

Pivot the head to access fasteners from an angle.

4-Point Sockets

Also known as pipe plug sockets, these sockets have a square shape that provides the best possible grip on square fasteners and prevents rounding.

Spark Plug Sockets

A rubber insert grips the plug to prevent damage.

Flex Spark Plug Sockets

Pivot the head to access fasteners from an angle.

Impact Sockets

6-Point Impact Sockets

Achieve the best possible grip on hex fasteners and prevent rounding.

Fastener-Holding 6-Point Impact Sockets

A magnet holds the fastener securely enough to drive self-tapping screws.

6-Point Lug Nut-Holding Impact Sockets

Move from lug nut to lug nut with the speed of a racecar pit crew. Up to five standard 6-point lug nuts stack up in the shank of these sockets, so you don’t have to stop to take the lug nuts out of the socket.

Thin-Wall 6-Point Impact Sockets

With a smaller OD than standard sockets, these fit between tightly spaced fasteners.

6-Point Flex Impact Sockets

Pivot the head to access fasteners from an angle.

Extra-Deep 6-Point Impact Sockets

Extra length allows access to fasteners on long bolts.

Nonmarring 6-Point Impact Sockets

Tighten or loosen nuts and bolts without damaging the finish.

6-Point Impact Sockets with Spline Drive

Attach these sockets to your spline-drive impact wrench.

12-Point Impact Sockets

The 12-point shape quickly positions on hex fasteners.

Nonsparking 12-Point Impact Sockets

Made of aluminum-bronze, these sockets satisfy OSHA requirements that specify nonsparking tools for locations where flammable vapors and combustible residues are present.

12-Point Flex Impact Sockets

Pivot the head to access fasteners from an angle.

4-Point Impact Sockets

The square shape provides the best possible grip on square fasteners and prevents rounding.

Budd Wheel Impact Sockets

Designed to remove and install dual wheels on trucks and trailers, these sockets have a hex recess for accessing lug nuts and a square recess to turn the threaded shafts found on inner wheels.

Continuous-Duty Sockets

Continuous-Duty 6-Point Sockets

These sockets are designed to tolerate continuous use with power tools and impact tools in high-volume production and assembly.

Continuous-Duty Fastener-Holding 6-Point Sockets

A magnet holds the fastener securely enough to drive self-tapping screws.

Socket Sets

Economy 6-Point Socket Sets

Suitable for occasional maintenance work, these sets are imported.

6-Point Socket Sets

Made in the U.S.A., these tools handle the toughest industrial applications, provide the best grip on fasteners, and have a superior finish.

Bolt-Through 6-Point Socket Sets

Pair the sockets in these sets with the bolt-through ratchet wrench to reach nuts at the bottom of a long threaded rod or bolt.

Nonsparking 6-Point Socket Sets

Made of aluminum-bronze, these sockets satisfy OSHA requirements that specify nonsparking tools for locations where flammable vapors and combustible residues are present.

6-Point Flex Socket Sets

Access 6-point nuts and bolts in tight and awkward spaces—the heads on these sockets pivot.

Fastener-Holding 6-Point Socket Sets

Two spring-loaded balls inside these sockets firmly hold nuts and bolts in place as you turn them, including nonmagnetic fasteners like stainless steel screws.

Extra-Deep 6-Point Socket Sets

With more than double the clearance of standard sockets, the sockets in these sets access nuts on extra-long bolts.

Wheel Bearing Locknut Socket Sets

Shaped and sized for compatibility with wheel bearing locknuts on trucks and trailers, the sockets in these sets make it easy to install and remove locknuts.

Economy 12-Point Socket Sets

Suitable for occasional maintenance work, these sets are imported.

12-Point Socket Sets

Made in the U.S.A., these tools handle the toughest industrial applications, provide the best grip on fasteners, and have a superior finish.

12-Point Flex Socket Sets

Pivot the head to access fasteners from an angle.

Electrical-Insulating 12-Point Socket Sets

These sets organize what you need when working around live electrical circuits.

Impact Socket Sets

6-Point Impact Socket Sets

The hex shape grips hex fasteners and prevents rounding. These sockets are made to withstand the high torque and force of impact tools.

6-Point Flex Impact Socket Sets

Pivot the head to access fasteners from an angle.

Reversible 6-Point Impact Socket Sets

Carry fewer impact sockets—these five reversible impact sockets turn 10 fastener sizes. Flip the socket around to turn a different size.

Nonmarring 6-Point Impact Socket Sets

Tighten or loosen nuts and bolts without damaging the finish.

4-Point Impact Socket Sets

Turn square-drive fasteners in several sizes with these socket sets.

Dual-Size 12-Point Impact Socket Sets

Use one socket to switch between two fastener sizes.

Budd Wheel Impact Socket Sets

Remove and install dual wheels on trucks and trailers with the sockets in these sets.

Fastener-Holding Inserts for Sockets

Slip these magnetic inserts into your sockets to keep fasteners from falling out.

Combination Wrenches

Spline Ratcheting Combination Wrenches

A spline-shaped box end turns spline, hex, and 12-point fasteners. This shape also gets a better grip on rounded fasteners that can be difficult to turn with a traditional wrench.

Spline Ratcheting Combination Wrench Sets

A spline-shaped box end turns spline, hex, and 12-point fasteners. This shape also gets a better grip on rounded fasteners that can be difficult to turn with a traditional wrench.

Spline-Drive Bosch Electric Rotary Hammers

Designed to drill larger holes than a SDS-drive hammer. For use with spline-shank drill bits.