Tool Kits | McMaster-Carr

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3,047 Products

Facility and Grounds Maintenance

Tool Sets

Secure fasteners and complete a variety of other maintenance tasks

9 products

Fastening and Joining

Screwdrivers

Tighten and loosen screws

93 products

Screwdriver Bits

Pair with drivers to turn screws

63 products

L-Keys

Turn fasteners from either end and reach into tight spots

129 products

T-Handle Keys

To turn fasteners in hard-to-reach spots, there's a long shaft and a grip for your whole hand

63 products

Screwdriver/Nutdrivers

Quickly switch between driving screws and driving nuts

4 products

One-Way Screw Removers

Loosen and remove one-way screws

1 product

Nutdrivers

Tighten and loosen nuts and bolts

14 products

Screw Starters

Grip and start turning screws that are too small to hold or located in hard-to-reach spots

3 products

Nutdriver Bits

Pair with nutdrivers to turn hex nuts and cap screws

3 products

Driver Shafts

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

1 product

Torque-Limiting Keys

Used to install carbide inserts in cutting tools, a handle limits the amount of torque generated

5 products

Tapping Screw Installation Tools

Use with a hammer drill to install tapping screws in concrete, block, and brick

3 products

Sockets

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

154 products

Combination Wrenches

Use the open end when tightening in cramped spaces and the box end when you need extra grip

57 products

Bit Sockets

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

100 products

Adjustable Wrenches

Adjust the jaws to fasten different size nuts, bolts, or workpiece

7 products

Box Wrenches

Grip all sides of a fastener to prevent slipping

19 products

Strap Wrenches

Grip plastic and high-polished pipe, tubing, hand wheels, and filters without marring the surface

1 product

Socket Wrenches

Apply torque to turn nuts, bolts, and other fasteners without rounding the heads

2 products

Spanner Wrenches

Grab onto holes and slots to turn collars, bearings, and other machine tool components

6 products

Socket Adapters

Make your socket more versatile, from converting the drive to limiting torque

22 products

Wrench Heads

Attach to your ratchet wrench and socket extension to turn fasteners where clearance is limited

15 products

Open-End Wrenches

Tighten and loosen fasteners from the top or the side

27 products

Shut-Off Valve Wrenches

Turn hard-to-reach valves on gas lines, faucets, toilets, and sinks

2 products

Socket Bits

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

1 product

Ratchet Wrenches

Adjust fasteners in tight spaces without removing and repositioning the wrench

3 products

Pin Removal Punches

Strike with a hammer to loosen and remove pins and rivets

26 products

Screw, Pipe, and Stud Extractors

Remove broken screws, pipes, and studs without damaging the threads around them

61 products

Nail Set Punches

Set nails flush or drive them out of view without damaging wood surfaces

1 product

Retaining Ring Pliers

Install and remove rings inside a bore or around a shaft

35 products

Fastener Assortments

Keep a variety of common screws, nuts, and washers on hand

13 products

Hex Head Screws

Used with nuts to create a stronger joint than flat and rounded screws

10 products

Socket Head Screws

With a deeper drive than flat and rounded head screws, these withstand more torque for a tighter hold

19 products

Set Screws

Exert pressure at the tip to hold parts in place, unlike screws that hold material together with threads

9 products

Rounded Head Screws

Sit just above the surface for a low-profile finish and hold tighter than flat head screws

6 products

Tapping Screws

Fasten a range of materials together without needing to tap the hole first

11 products

Wood Screws

Fasten material to wood or pieces of wood to each other

3 products

Flat Head Screws

Fit in countersunk holes for a flush finish

4 products

Shoulder Screws

Rotate parts around the cylinder under the head to guide and align them during installation

2 products

Washers

Nearly every size and shape imaginable, from flat washers to clipped to curved

13 products

Insulating Washers

Isolate screws from electrical current and prevent corrosion from mating different metals

1 product

Sealing Washers

Prevent fluids from leaking around fasteners

2 products

Lock Washers

Resist vibration to prevent fasteners from loosening

7 products

Rivet Nuts

Add threads to thin panels with access from only one side; also known as blind inserts

28 products

Threaded Inserts

Create new threads or repair stripped threads

330 products

Hex Nuts

Handle most general fastening needs

7 products

Locknuts

Hold fasteners in place to prevent loosening from vibration

4 products

Thumb Nuts

Easy to tighten and loosen by hand for making frequent adjustments

1 product

Cap Nuts

Cover and protect threads while adding a finished look; also known as acorn nuts

2 products

Threaded Rods

Anchor, connect, or hang components in a wide variety of applications

2 products

Fabricating and Machining

Pliers Sets

A variety of pliers styles and sizes for whatever job comes up

15 products

Picks

Hold, separate, and position small parts such as wire and springs

28 products

Locking Pliers

Clamp workpieces and lock them in place to keep your hands free

5 products

Wire-Twisting Pliers

Grip or attach wire then twist to secure fasteners or electrical connections

1 product

Small Parts Positioners

Position and install tiny springs and wires

2 products

Tweezers

Grasp small objects that are too small to pick up by hand

15 products

Adjustable Pliers

A range of jaw positions for turning fasteners and gripping workpieces

6 products

Packing Seal Pullers

Pull packing out of pump and valve seals

25 products

Gear and Bearing Pullers

Remove gears and bearings from hollow shafts and housings

11 products

Bearing and V-Belt Pulley Separator Sets

Separate bearings or V-belt pulleys of various sizes with these sets

1 product

Hub and Fan Blade Grip Pullers

Remove press-fit hubs and fan blades from motor shafts

1 product

Clamps

Hold workpieces securely in place

4 products

Tap, Die, and Thread File Sets

Repair internal and external threads in a range of sizes

1 product

Tap and Drill Bit Sets

Drill holes and cut internal threads in a variety of sizes

16 products

Tap, Die, and Drill Bit Sets

Cut and repair internal and external threads and drill holes in many different sizes

1 product

Tap Extensions

Extend the length of your tap to cut in hard-to-reach areas

1 product

Taps

Cut internal threads for fasteners, pipe, conduit, and more

364 products

Tap Extractors

Grip the flutes on a broken tap to remove it without damaging the surrounding threads

7 products

Tap Holders

Connect taps to ratchet wrenches, drill presses, or milling machines

2 products

Tap and Die Sets

Cut and repair internal and external threads in many sizes

15 products

Tap and Die Wrench Sets

Switch between internal and external threading with interchangeable tap and die adapters

4 products

Dies

Cut or restore external threads on fasteners, pipe, or conduit

28 products

Thread-Repairing Files

Spot fix rusted and damaged threads along screws, pipe, or conduit

3 products

Cordless Tool Kits

A reciprocating saw, hammer drill, chargers, and more in an easy-to-carry tote bag

1 product

Drill Bits

Create holes in metal, wood, plastic, concrete, and more

147 products

Drill Taps

Drill and thread holes with the same bit

3 products

Hollow-Core Cutters

Use in magnetic-base drills to form burr-free holes by only cutting the outside edge of a hole

5 products

Drill/Screwdriver Bits

Quickly change between drilling countersunk holes and driving screws

3 products

Rotary Tools

Grind, sand, finish, and polish workpieces

3 products

Rotary Tool Chucks

Quickly swap accessories in and out of your rotary tool

1 product

Rotary Tool Accessories

Complete a wide range of cutting, grinding, and sanding tasks with your rotary tool

13 products

Rotary Tool Engraving Bits

Pair with rotary tools for engraving and carving tasks

1 product

Rotary Tool Buffing and Polishing Kits

Buff, polish, and clean with rotary tools

1 product

Rotary Tool Nose Caps

Attach to the end of Dremel grinders for quick accessory changes without extra tools

1 product

Rotary Tool Router Bits

Pair with rotary tools for routing, inlaying, and mortising in wood and other soft materials

1 product

Multitools

A variety of tools and blades all in one

42 products

Sheet Metal-Cutting Snips

Cut through sheet metal by hand

3 products

3D-Printed-Part Scrapers

Separate printed parts from printer plates without damaging either of them

1 product

Files

Deburr, polish, and sharpen nearly any material, such as metal, plastic, ceramic, and wood

58 products

Countersinks

Cut a cone-shaped opening in a hole to install flat-head screws and rivets flush with the surface

88 products

Pry Bars

Slide under heavy objects to pry, lift, and position them

2 products

Counterbores

Enlarge the top of a hole to install socket and hex head screws flush with the surface

9 products

Center Drills

Drill cone-shaped openings to mate with lathe centers or start pilot holes for screws

17 products

Buffing Kits

Everything you need to remove scratches and surface imperfections with a buffer or polisher

10 products

Polishing Stones

Create a finer, more polished finish on tools, molds, and dies than sanding sticks

3 products

Deburring Tools

Changeable or fixed cutting blades shave rough edges from surfaces, holes, and pipe

19 products

Burs

Cut excess material to smooth surfaces and holes using a rotary power tool like a die grinder

21 products

Sanding Drum and Sleeve Kits

Assortments include a variety of sanding drums and sleeves to shape and deburr internal surfaces

9 products

End Mills

Cut and shape material to create precise slots, grooves, and profiles

48 products

Fly Cutters

Machine wide cuts on flat surfaces and leave a smoother finish than face mills

2 products

Fixture Kits

Everything needed to mount workpieces of different sizes to your machine table

48 products

Reamers

Finish holes to an exact size, correct misaligned holes, and remove burrs

30 products

Hole Punches

Punch holes in metal, plastic, and fabric

37 products

Parallels

Raise workpieces above your vise to create clearance for cutting tools

9 products

Fixture Clamps

Secure your workpiece to a fixture table so it won't move during machining

3 products

Router Bits

Attach to routers and CNC machines to cut grooves, chamfers, and other detailed shapes

11 products

Lathe Tools

Shape workpieces as they rotate on a lathe

35 products

Electrical

Terminal and Splice Kits

Maintain a supply of extra terminals and splices to join and terminate wire

17 products

Wire Splices

Join wire and protect the connection

9 products

Wire and Cable Strippers

Remove the outer insulation on wire and cable

2 products

Electrical Enclosure Fasteners

Mount components to your enclosure without worrying about leaks

3 products

Electrical Enclosure Pole Mounts

Everything you need to secure enclosures to round poles or beams

14 products

Safety Equipment

Eyeglass Repair Kits

Perform common eyeglass repairs with the included screwdriver, magnifier, and screws

1 product

Measuring and Inspecting

Alignment Pins

Line up holes in sheet metal, I-beams, and angle irons for bolting, riveting, and welding

7 products

Shaft Alignment Kits

Confirm that shafts are aligned or measure the degree of their misalignment

9 products

Pipe Flange Aligners

Line up flange holes so they bolt securely and connections won’t leak

3 products

Precision Measuring Tool Sets

Multiple precision measuring tools in one convenient case

13 products

Magnetic Particle Flaw Detection Kits

Everything you need to detect imperfections on or below metal surfaces

2 products

Magnetic Yokes

Pair with magnetic particles to find defects on or below metal surfaces

2 products

Lubricating

Grease Gun Accessory Kits

Adapt and extend dispensing tips and install grease fittings with an assortment of tools

2 products

Grease Fitting Cleaning Tools

Flush out old grease, dirt, and debris from clogged fittings

2 products

Air Tool Lubricant Kits

Maintain peak air tool performance with included oil, grease, grease gun, and precision-tip nozzles

1 product

Sealing

O-Rings

Fit snugly into a groove between parts to create a leak-resistant seal

24 products

Backup Rings

Extend the life of O-rings and improve their performance under high pressure

1 product

O-Ring Bonding Kits

Everything needed to make O-rings

7 products

Fluid Handling

Pressurized Pipe Tapping Kits

Include the tools you need to add a new line without having to shut down your piping system

6 products

Power Transmission

Belt Joining Kits

Everything you need to soften belt ends and join them together

12 products

Building and Machinery Hardware

Clamp-On Framing and Fittings

Two-piece fittings let you modify assembly stations, conveyors, and racks without dismantling them

1 product