Screwdriver Insert Bits | McMaster-Carr

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15/16" to 1 1/8"

31/32" to 3 1/16"

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Length

15/16" to 1 1/8"

31/32" to 3 1/16"

1 1/4" to 1 3/8"

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Stainless Steel

Tool Type

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Magnesium Phosphate Coated

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DFARS Specialty Metals

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Performance

Changeable Shaft

Corrosion Resistant

Electrically Insulating

Extra-Strong Grip

Fastener Holding

Precise Control

How can we improve?

2,381 Products

Screwdriver Bits

Hex Bits

Six contact points deliver more torque than slotted and Phillips bits

Slotted Bits

Highly versatile, but can't deliver much torque

Bit Sets

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

Torx Bits

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

Tight-Clearance Slotted Bits

Tight-Clearance Slotted Bits

Access slotted screws in narrow, recessed holes

Phillips Bits

Align easily with fasteners and deliver more torque than slotted bits

Phillips Bits For Impact Drivers

Phillips Bits For Impact Drivers

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

Hex Bit Sets

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

Screw-Guiding Slotted Bits

Screw-Guiding Slotted Bits

Drive long slotted screws with zero wobble

Square Bits

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

Torx Plus Bits

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

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 Bit Sets

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

Sure-Grip Phillips Bits

Sure-Grip Phillips Bits

The tip sits snugly in Phillips screw slots to prevent slipping

Drilled Spanner Bits

Drilled Spanner Bits

The unique two-point shape turns drilled spanner screws

Corrosion-Resistant Hex Bits

Corrosion-Resistant Hex Bits

Turn hex screws in areas exposed to moisture and chemicals

Phillips Terminal Screw Bits

Phillips Terminal Screw Bits

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

Slotted Bit Sets

Slotted Bit Sets

Highly versatile, but can't deliver much torque

High-Torque Bit Sets

High-Torque Bit Sets

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

High-Torque Slotted Bits

High-Torque Slotted Bits

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

Corrosion-Resistant Slotted Bits

Corrosion-Resistant Slotted Bits

Turn slotted screws in areas exposed to moisture and chemicals

High-Torque Phillips Bits

High-Torque Phillips Bits

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

Screw-Holding Torx Bit Sets

Screw-Holding Torx Bit Sets

Grip Torx screws so you can fasten with one hand

Bit Sets For Impact Drivers

Bit Sets For Impact Drivers

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

Precise-Control Bit Sets

Precise-Control Bit Sets

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

Reversible Phillips Bits

Reversible Phillips Bits

Flip these bits around to drive a different size Phillips screw

Pozidriv® Bits

Pozidriv® Bits

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

Ball-Tip Hex Bit Sets

Ball-Tip Hex Bit Sets

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

Hi-Torque Bits

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

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

Hex Bits For Impact Drivers

Hex Bits For Impact Drivers

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

Tight-Clearance Phillips Bits

Tight-Clearance Phillips Bits

Access Phillips screws in narrow, recessed holes

Tri-Wing® Bit Sets

Tri-Wing® Bit Sets

Access electronics secured with Tri-Wing® screws

Screw-Holding Ball-Tip Hex Bits

Screw-Holding Ball-Tip Hex Bits

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

Corrosion-Resistant Torx Bits

Corrosion-Resistant Torx Bits

Turn Torx screws in areas exposed to moisture and chemicals

Reversible Phillips/Slotted Bits

Reversible Phillips/Slotted Bits

Turn two popular drive styles with one bit

Triangle Bits

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

Square/Phillips Bits

Square/Phillips Bits

Turn both square and Phillips screws

Depth-Limiting Phillips Bits

Depth-Limiting Phillips Bits

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

Frearson Bits

Turn Frearson screws, which are frequently found on marine equipment

Torx Plus Bit Sets

Torx Plus Bit Sets

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

6-Flute Spline Bit Sets

6-Flute Spline Bit Sets

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

Tri-Lobe Bits

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

Tri-Wing® Bits

Tri-Wing® Bits

Access electronics secured with Tri-Wing® screws

Mortorq® Bits

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

High-Torque Torx Bits

High-Torque Torx Bits

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

Pozidriv® Terminal Screw Bits

Pozidriv® Terminal Screw Bits

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

Torq-Set® Bit Sets

Torq-Set® Bit Sets

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

Microstix Bits

Turn Microstix screws, frequently found on old computers, cell phones, and electronics

Tamper-Resistant Torx Bits

Tamper-Resistant Torx Bits

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

Screw-Holding Torx Bits

Screw-Holding Torx Bits

Grip Torx screws so you can fasten with one hand

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

Pozidriv® Bits For Impact Drivers

Pozidriv® Bits For Impact Drivers

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

Screw-Holding Hex Bits

Screw-Holding Hex Bits

Grip hex screws so you can fasten with one hand

Tamper-Resistant Pentalobe Bits

Tamper-Resistant Pentalobe Bits

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

Triple Square Bits

Triple Square Bits

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

Corrosion-Resistant Phillips Bits

Corrosion-Resistant Phillips Bits

Turn Phillips screws in areas exposed to moisture and chemicals

Tamper-Resistant Torx Bit Sets

Tamper-Resistant Torx Bit Sets

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

Tri-Groove Bit Sets

Tri-Groove Bit Sets

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

Tamper-Resistant Hex Bits

Tamper-Resistant Hex Bits

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

Torq-Set® Bits

Torq-Set® Bits

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

Torx Bits For Impact Drivers

Torx Bits For Impact Drivers

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

Clutch Bits

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

JIS Bits

Turn JIS screws, which are commonly found in electronics assemblies

Sure-Grip Torq-Set® Bits

Sure-Grip Torq-Set® Bits

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

Pentalobe Bits

Turn pentalobe screws found on Apple devices and other electronics

Square Bits For Impact Drivers

Square Bits For Impact Drivers

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

RIBE Bits

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

Corrosion-Resistant Square Bits

Corrosion-Resistant Square Bits

Turn square bits in areas exposed to moisture and chemicals

Tamper-Resistant Hex Bit Sets

Tamper-Resistant Hex Bit Sets

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

Tamper-Resistant Square Bits

Tamper-Resistant Square Bits

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

Threaded-Shank Phillips Bits

Threaded-Shank Phillips Bits

Thread directly onto your driving tool for an extra-stable connection that minimizes wobbling

Tri-Groove Bits

Tri-Groove Bits

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

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

Mortorq® Super Bits

Mortorq® Super Bits

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

Tamper-Resistant Phillips Bits

Tamper-Resistant Phillips Bits

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

Asymmetrical Bits

Asymmetrical Bits

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

Depth-Limiting Square Bits

Depth-Limiting Square Bits

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

Pentagon Bits

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

Pozidriv® Bit Sets

Pozidriv® Bit Sets

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

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

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 Plus Bits

Tamper-Resistant Torx Plus Bits

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

Other Products

Torque Screwdrivers

Torque Screwdrivers

Apply precise torque as you fasten screws to prevent overtightening

Nutdriver Bits

Pair with nutdrivers to turn hex nuts and cap screws

Bit Sockets

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

Screwdrivers

Tighten and loosen screws

Bit Adapters

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

Socket Bits

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

Driver Shafts

Attach to a handle to create your own driver tool, or pair with socket wrenches and power tools

Bit Organizers

Store and organize several sizes and styles of bits

Wing Nut Driver Bits

Wing Nut Driver Bits

Use with power tools to hold and turn wing nuts

Eyebolt and Hook Driver Bits

Eyebolt and Hook Driver Bits

Install and remove eyebolts and screw-in hooks

One-Way Screw Remover Bits

One-Way Screw Remover Bits

Use with a nutdriver to loosen one-way screws

Hanger Bolt Driver Bits

Hanger Bolt Driver Bits

Turn flat-end bolts and screws

Driver Extension Adapters

Driver Extension Adapters

Create a tool that’s as long as you need to reach deeply recessed fasteners

Drill/Screwdriver Bits

Drill/Screwdriver Bits

Quickly change between drilling countersunk holes and driving 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

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