Hex Insert Bits | McMaster-Carr

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1 1/4" to 1 3/8"

1 3/8" to 1 5/8"

1 5/8" to 2 5/8"

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1 1/4" to 1 3/8"

1 3/8" to 1 5/8"

1 5/8" to 2 5/8"

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1,314 Products

Screwdriver Bits

Hex Bits

Six contact points deliver more torque than slotted and Phillips bits

Ball-Tip Hex Bits

Ball-Tip Hex Bits

Turn hex screws at an angle when you can't access them head on

Slotted Bits

Highly versatile, but can't deliver much torque

Tamper-Resistant Torx Bits

Tamper-Resistant Torx Bits

Fit around the security pin to turn tamper-resistant Torx screws

Tri-Groove Bits

Tri-Groove Bits

Turn tri-groove screws, typically found on signs, light fixtures, and other public property

Torx Bits

Six wide lobes grip fasteners so they won't slip and damage the drive

Tamper-Resistant Hex Bits

Tamper-Resistant Hex Bits

Fit around the security pin to turn tamper-resistant hex screws

Hex Bit Sets

Six contact points deliver more torque than slotted and Phillips bits

Triple Square Bits

Triple Square Bits

Three times as many contact points as square bits to deliver maximum torque

Phillips Bits

Align easily with fasteners and deliver more torque than slotted bits

Sure-Grip Phillips Bits

Sure-Grip Phillips Bits

The tip sits snugly in Phillips screw slots to prevent slipping

Pentagon Bits

Turn pentagon screws, commonly found on manhole covers and other public infrastructure

Drilled Spanner Bits

Drilled Spanner Bits

The unique two-point shape turns drilled spanner screws

Bit Sets

Have a range of bits ready to turn the most common screw styles and sizes

Hex Bits For Impact Drivers

Hex Bits For Impact Drivers

Absorb 30 times the shock of standard hex bits to withstand intense force

Pozidriv® Bits

Pozidriv® Bits

More points of contact than Phillips bits to withstand more torque without slipping

Clutch Bits

Turn the butterfly-shaped screws commonly found on old vehicles and machinery

Corrosion-Resistant Hex Bits

Corrosion-Resistant Hex Bits

Turn hex screws in areas exposed to moisture and chemicals

6-Flute Spline Bit Sets

6-Flute Spline Bit Sets

Turn 6-flute spline screws, which are commonly found in workholding equipment

Square Bits

Drive screws into wood and other tough materials without risking cracks or splits

Torq-Set® Bits

Torq-Set® Bits

Similar to Phillips bits, but with offset wings for a better grip

Phillips Terminal Screw Bits

Phillips Terminal Screw Bits

Turn fasteners on electrical equipment, such as fuse boxes and terminal blocks

High-Torque Phillips Bits

High-Torque Phillips Bits

Less likely to crack or deform under high torque than standard Phillips bits

Mortorq® Super Bits

Mortorq® Super Bits

Wider lobes than standard Mortorq® bits to deliver even higher torque

Ball-Tip Hex Bit Sets

Ball-Tip Hex Bit Sets

Turn hex screws at an angle when you can't access them head on

Precise-Control Bit Sets

Precise-Control Bit Sets

A variety of bit styles with knurled shanks for fine-tuned finger tightening

Screw-Holding Ball-Tip Hex Bit Sets

Screw-Holding Ball-Tip Hex Bit Sets

Turn hex screws in hard-to-reach places with just one hand

Torx Plus Bits

Larger lobes than Torx bits to deliver more torque without slipping and stripping the drive

Tri-Wing® Bits

Tri-Wing® Bits

Access electronics secured with Tri-Wing® screws

Screw-Guiding Slotted Bits

Screw-Guiding Slotted Bits

Drive long slotted screws with zero wobble

Tight-Clearance Phillips Bits

Tight-Clearance Phillips Bits

Access Phillips screws in narrow, recessed holes

Tamper-Resistant Phillips Bits

Tamper-Resistant Phillips Bits

Fit around the security pin to turn tamper-resistant Phillips screws

High-Torque Slotted Bits

High-Torque Slotted Bits

Less likely to crack or deform under high torque than standard slotted bits

Tri-Lobe Bits

Turn tri-lobe screws, commonly used to secure safety covers on electronics

Phillips Bits For Impact Drivers

Phillips Bits For Impact Drivers

Absorb 30 times the shock of standard Phillips bits to withstand intense force

Torx Bits For Impact Drivers

Torx Bits For Impact Drivers

Absorb 30 times the shock of standard Torx bits to withstand intense force

Screw-Holding Ball-Tip Hex Bits

Screw-Holding Ball-Tip Hex Bits

Turn hex screws in hard-to-reach places with just one hand

Pentalobe Bits

Turn pentalobe screws found on Apple devices and other electronics

Tamper-Resistant Hex Bit Sets

Tamper-Resistant Hex Bit Sets

Fit around the security pin to turn tamper-resistant hex screws

Torx Bit Sets

Six wide lobes grip fasteners so they won't slip and damage the drive

Tamper-Resistant Torx Plus Bits

Tamper-Resistant Torx Plus Bits

Fit around the security pin to turn tamper-resistant Torx Plus screws

Torq-Set® Bit Sets

Torq-Set® Bit Sets

Similar to Phillips bits, but with offset wings for a better grip

Tri-Groove Bit Sets

Tri-Groove Bit Sets

Turn tri-groove screws, typically found on signs, light fixtures, and other public property

Screw-Holding Torx Bits

Screw-Holding Torx Bits

Grip Torx screws so you can fasten with one hand

Screw-Holding Hex Bits

Screw-Holding Hex Bits

Grip hex screws so you can fasten with one hand

Tight-Clearance Slotted Bits

Tight-Clearance Slotted Bits

Access slotted screws in narrow, recessed holes

JIS Bits

Turn JIS screws, which are commonly found in electronics assemblies

Reversible Torx Bits

Reversible Torx Bits

Flip these bits around to drive a different size Torx screw

Ball-Tip Torx Bits

Ball-Tip Torx Bits

Turn Torx screws at an angle when you can't access them head on

Corrosion-Resistant Torx Bits

Corrosion-Resistant Torx Bits

Turn Torx screws in areas exposed to moisture and chemicals

Mortorq® Bits

Turn the ultra-low-profile Mortorq® screws, often found in military and aerospace applications

Sure-Grip Torq-Set® Bits

Sure-Grip Torq-Set® Bits

Grooves on the tip bite into Torq-Set® screw slots to prevent slipping

High-Torque Torx Bits

High-Torque Torx Bits

Less likely to crack or deform under high torque than standard Torx bits

Pozidriv® Bits For Impact Drivers

Pozidriv® Bits For Impact Drivers

Absorb 30 times the shock of standard Pozidriv® bits to withstand intense force

Reversible Phillips/Slotted Bits

Reversible Phillips/Slotted Bits

Turn two popular drive styles with one bit

Square Bits For Impact Drivers

Square Bits For Impact Drivers

Absorb 30 times the shock of standard square bits to withstand intense force

Tamper-Resistant Pentalobe Bits

Tamper-Resistant Pentalobe Bits

Fit around the security pin to turn tamper-resistant pentalobe screws

RIBE Bits

Turn RIBE screws, which are commonly found in European cars and trucks

Reversible Phillips Bits

Reversible Phillips Bits

Flip these bits around to drive a different size Phillips screw

Corrosion-Resistant Slotted Bits

Corrosion-Resistant Slotted Bits

Turn slotted screws in areas exposed to moisture and chemicals

Corrosion-Resistant Square Bits

Corrosion-Resistant Square Bits

Turn square bits in areas exposed to moisture and chemicals

Hi-Torque Bits

Similar to slotted bits, but with curved walls for better contact with the screw recess

Tamper-Resistant Square Bits

Tamper-Resistant Square Bits

Fit around the security pin to turn tamper-resistant square screws

Triangle Bits

Turn triangle-drive screws, commonly used to fasten safety covers on electronics

Corrosion-Resistant Phillips Bits

Corrosion-Resistant Phillips Bits

Turn Phillips screws in areas exposed to moisture and chemicals

Double Square Bits

Double Square Bits

Twice as many contact points as square bits to deliver more torque

Drilled Spanner Bit Sets

Drilled Spanner Bit Sets

The unique two-point shape turns drilled spanner screws

Frearson Bits

Turn Frearson screws, which are frequently found on marine equipment

Square/Phillips Bits

Square/Phillips Bits

Turn both square and Phillips screws

Asymmetrical Bits

Asymmetrical Bits

Secure asymmetrical screws with a unique drive that's only available from McMaster-Carr

Bit Sets For Impact Drivers

Bit Sets For Impact Drivers

A selection of bit styles that absorb 30 times the shock of standard bits

Depth-Limiting Phillips Bits

Depth-Limiting Phillips Bits

A collar butts up against your surface to stop Phillips screws from sinking too deep

Depth-Limiting Square Bits

Depth-Limiting Square Bits

A collar butts up against your surface to stop square screws from sinking too deep

JIS Bit Sets

Turn JIS screws, which are commonly found in electronics assemblies

Phillips Bit Sets

Phillips Bit Sets

Align easily with fasteners and deliver more torque than slotted bits

Pozidriv® Bit Sets

Pozidriv® Bit Sets

More points of contact than Phillips bits to withstand more torque without slipping

Pozidriv® Terminal Screw Bits

Pozidriv® Terminal Screw Bits

Secure screws on European electrical equipment, such as fuse boxes and terminal blocks

Reversible Slotted Bits

Reversible Slotted Bits

Flip these bits around to drive a different size slotted screw

Reversible Square Bits

Reversible Square Bits

Flip these bits around to drive a different size square screw

Reversible Tamper-Resistant Torx Bits

Reversible Tamper-Resistant Torx Bits

Turn two sizes of tamper-resistant Torx screws with one bit

Screw-Guiding Phillips Bits

Screw-Guiding Phillips Bits

Drive long Phillips screws with zero wobble

Screw-Holding Torx Bit Sets

Screw-Holding Torx Bit Sets

Grip Torx screws so you can fasten with one hand

Slotted Bit Sets

Slotted Bit Sets

Highly versatile, but can't deliver much torque

Square Bit Sets

Square Bit Sets

Drive screws into wood and other tough materials without risking cracks or splits

Sure-Grip Phillips Bit Sets

Sure-Grip Phillips Bit Sets

Grooves on the tip bite into Phillips screw slots to prevent slipping

Tamper-Resistant Torx Bit Sets

Tamper-Resistant Torx Bit Sets

Fit around the security pin to turn tamper-resistant Torx screws

Torx Plus Bit Sets

Torx Plus Bit Sets

Larger lobes than Torx bits to deliver more torque without slipping and stripping the drive

High-Torque Bit Sets

High-Torque Bit Sets

A selection of bit styles that won't crack or deform under pressure

Tri-Wing® Bit Sets

Tri-Wing® Bit Sets

Access electronics secured with Tri-Wing® screws

Other Products

Socket Bits

Switch out worn or damaged bits instead of replacing your entire bit socket

Nutdriver Bits

Pair with nutdrivers to turn hex nuts and cap screws

Bit Adapters

Connect a variety of bits to drills, powered screwdrivers, ratchet wrenches, and other turning tools

Bit Sockets

Turn fasteners with an internal drive style without slipping and damaging the drive

Drill/Screwdriver Bits

Drill/Screwdriver Bits

Quickly change between drilling countersunk holes and driving screws

Screwdrivers

Tighten and loosen screws

Screwdriver/Nutdrivers

Screwdriver/Nutdrivers

Quickly switch between driving screws and driving nuts

One-Way Screw Remover Bits

One-Way Screw Remover Bits

Use with a nutdriver to loosen one-way screws

Bit Organizers

Store and organize several sizes and styles of bits

Impact Drivers

More powerful than drills to drive screws through dense material and loosen stuck fasteners

Torque Screwdrivers

Torque Screwdrivers

Apply precise torque as you fasten screws to prevent overtightening

Eyebolt and Hook Driver Bits

Eyebolt and Hook Driver Bits

Install and remove eyebolts and screw-in hooks

Hanger Bolt Driver Bits

Hanger Bolt Driver Bits

Turn flat-end bolts and screws

Wood Screw Threaded Stud Driver Bits

Wood Screw Threaded Stud Driver Bits

Install wood screw threaded studs, which are also known as dowel screws

Threaded Rod and Stud Driver Bits

Threaded Rod and Stud Driver Bits

Quickly install threaded rods and studs with a cordless drill, instead of by hand

Wing Nut Driver Bits

Wing Nut Driver Bits

Use with power tools to hold and turn wing nuts

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)