McMaster-Carr Supply Company is a private American supplier of hardware, tools, raw materials, industrial materials, and maintenance equipment. They function as a business-to-business company.^[1] The company was founded in 1901 and is based in Elmhurst, Illinois, with distribution centers in Robbinsville, New Jersey; Santa Fe Springs, California; Douglasville, Georgia and Aurora, Ohio.^[2][3] A new distribution center and regional headquarters began construction in May 2024 in Fort Worth, Texas, with completion expected in 2027.

https://www.mcmaster.com

Abrading & Polishing

https://www.mcmaster.com/products/abrading-polishing

Sanding, Filing & Grinding

• Sanding Abrasives
• Sanders
• Files
• Grinding Wheels
• Grinders
• Grinding Bits
• Burs
• Deburring Tools
• Brushes
• Abrasive Blasters
• Abrasive Blasting Media
• Sharpeners

Polishing

• Cylinder Hones
• Buffing Wheels
• Polishers
• Lapping & Polishing Compounds
• Barrel Tumblers
• Finishin

Building & Grounds

https://www.mcmaster.com/products/building-grounds

Building & Grounds

• Flags
• Weather Instruments
• Shovels
• Landscaping Equipment
• Garden Hose
• Concrete, Asphalt & Roof Repair
• Matting
• Tarps
• Window Screening & Shades
• Paint & Coatings
• Paint Brushes & Sprayers
• Grating & Stair Treads
• Safety Railings
• Scaffolds
• Ladders
• Step Stools
• Pest Control
• Video Surveillance
• Horns, Bells & Alarms

Electrical & Lighting

https://www.mcmaster.com/products/electrical-lighting

Wiring & Connecting

• Wire & Cable
• Plugs & Receptacles
• Extension Cords & Power Strips
• Heat-Shrink Tubing
• Sleeving
• Cord Grips
• Electrical Connectors
• Electrical Tape
• Bonding & Grounding Equipment
• Conduit & Fittings
• Tube Benders
• Raceway
• Cable Carriers
• Cable Ties
• Enclosures
• Outlet Boxes
• Wire Strippers & Crimpers
• Cord Reels
• Data & Voice Equipment

Switching & Controlling

• Switches & Relays
• Transformers
• Circuit Breakers
• Fuses
• Ground Fault Circuit Interrupters (GFCIs)
• Surge Suppressors

Motor Maintenance

• Electric Motors
• Motor Controllers
• Motor Capacitors & Contactors
• Multimeters & Electrical Testers
• Dusters & Cleaners

Power Generating

• Batteries
• Battery Testers, Chargers & Accessories
• Generators

Lighting

• Light Bulbs
• Lights
• Flashlights
• Light Fixtures
• Ballasts
• Lighting Accessories

Fabricating

https://www.mcmaster.com/products/fabricating

Machining

• Drill Bits
• Drill Bushings
• Drills
• Drill Chuck Arbors
• Chucks
• Collets
• Countersinks
• Counterbores
• Lathe Tools
• Carbide Inserts & Holders
• End Mills
• Milling Cutters
• Reamers
• Routers & Bits
• Taps
• Tapping & Threading Tools
• Dies
• Broaches
• Layout Fluid & Scribers

Forming

• Presses
• Sheet Metal Formers
• Tube Benders
• Punches

Clamping & Positioning

• Clamps
• Vises
• Turntables
• Positioning Arms
• Spring Plungers
• Tool Balancers

Parts Cleaning & Treating

• Parts Washers
• Wire Baskets
• Nozzles
• Blowguns
• Dusters & Cleaners
• Static Eliminating Blowers
• Heat Guns & Lamps
• Ovens & Furnaces
• Hot Plates
• Melting Pots

Fastening & Joining

https://www.mcmaster.com/products/fastening-joining

Fasteners

• Screws & Bolts
• Threaded Rods & Studs
• Eyebolts
• U-Bolts
• Nuts
• Washers
• Shims
• Helical & Threaded Inserts
• Spacers & Standoffs
• Pins
• Anchors
• Nails
• Nailers
• Rivets
• Rivet Tools
• Staples
• Staplers
• Key Stock
• Retaining Rings
• Cable Ties
• Lanyards
• Magnets

Adhesives & Tape

• Adhesives
• Tape
• Hook & Loop

Welding, Brazing & Soldering

• Electrodes & Wire
• Welders
• Gas Regulators
• Welding Gloves
• Welding Helmets & Glasses
• Protective Screens
• Brazing Alloys
• Torches
• Solder
• Soldering Irons
• Melting Pots

Filtering

https://www.mcmaster.com/products/filtering

• Cartridges, Bags & Housings
• Strainers
• Water Filters
• Steam Traps
• Filter / Regulator / Lubricators (FRLs)
• Air Filters
• Oil Filters & Skimmers
• Perforated Sheets
• Wire Cloth
• Plastic Mesh
• Magnetic Separators
• Sieves
• Breather Vents
• Mufflers

Flow & Level Control

https://www.mcmaster.com/products/flow-level-control

Flow

• Pumps
• Valves
• Orifices
• Switches
• Flowmeters
• Sights
• Mixers
• Vibrators

Liquid Level

• Switches
• Indicators
• Gauges
• Sights
• Floats

Furniture & Storage

https://www.mcmaster.com/products/furniture-storage

Furniture

• Tables
• Workstations & Desks
• Workbenches
• Framing & Railing Components
• Benches
• Stools & Seats
• Chairs

Storage

• Cabinets
• Lockers
• Coat Racks
• Shelving
• Racks
• Pallets
• Chests
• Storage Buildings
• Partitions
• Tool Holders
• Tool Boxes & Bags

Containers

• Jars, Bottles & Pitchers
• Pails
• Tanks
• Drums
• Fuel & Safety Cans
• Sprayers
• Spill Control Containers
• Boxes
• Pans
• Dump Trucks
• Waste Containers
• Garbage Bags
• Funnels & Scoops
• Wire Baskets

Hand Tools

https://www.mcmaster.com/products/hand-tools

• Hammers
• Screwdrivers
• Wrenches
• Pliers
• Sockets
• Nutdrivers
• Hex Keys & Drivers
• Knives
• Saws
• Staplers
• Nailers
• Chisels
• Scrapers
• Pry Bars
• Tweezers
• Screw Extractors
• Drills
• Nonsparking Tools
• Tape Rules
• Retrievers & Picks
• Tool Balancers
• Tool Sets

Hardware

https://www.mcmaster.com/products/hardware

Machinery Hardware

• Knobs
• Hand Wheels
• Handles
• Grips
• Machinery Mounts
• Glides
• Edge Trim
• Bumpers
• Bellows
• Caps & Plugs
• Control Cables
• Grommets

Door & Cabinet Hardware

• Hinges
• Door Closers
• Push Bars
• Door Holders & Stops
• Hasps
• Weather- stripping
• Door Track & Hangers
• Magnetic Contacts
• Catches
• Cam Latches
• Draw Latches
• Slide Bolts
• Pull Handles
• Drawer Slides
• Lid Supports
• Hooks
• Brackets
• Window Hardware

Locks

• Door Locks
• Deadbolt Locks
• Drawer Locks
• Padlocks
• Lockouts
• Key Holders

Doors

• Doors
• Vinyl Strip Doors
• Folding Gates
• Air Curtains

Heating & Cooling

https://www.mcmaster.com/products/heating-cooling

• Heaters
• Blowers
• Roof Ventilators
• Fume Exhausters & Air Cleaners
• Dust Collectors
• Fans
• Equipment Cooling Fans
• Louvers
• Air Conditioners
• Humidifiers & Dehumidifiers
• Desiccants
• Duct & Fittings
• Duct Tape
• Air Filters
• Insulation
• Thermostats

Lubricating

https://www.mcmaster.com/products/lubricating

• Grease
• Grease Guns
• Grease Fittings
• Oil
• Lubrication Systems
• Oilers
• Lubricants
• Metalworking Fluids
• Coolant Hose & Dispensers

Material Handling

https://www.mcmaster.com/products/material-handling

• Conveyors
• Dollies
• Pallet Trucks
• Carts & Trucks
• Hitches
• Casters
• Wheels
• Floor Locks
• Jacks
• Lift Tables
• Drum Handling Equipment
• Suction Cups
• Vacuum Cups
• Robotics
• Ladders
• Step Stools
• Scaffolds
• Work Platforms
• Adjustable Stands
• Tie Downs
• Cycles
• Dock Equipment

Measuring & Inspecting

https://www.mcmaster.com/products/measuring-inspecting

Dimensional Measuring

• Rules
• Tape Rules
• Micrometers
• Calipers
• Feeler Gauges
• Height Gauges
• Depth Gauges
• Bore Gauges
• Thickness Gauges
• Variance Indicators
• Layout Tools
• Squares & Protractors
• Levels
• Compasses

Calibrating

• Gauge Blocks
• Plug Gauges
• Thread Gauges
• Parallels
• Surface Plates
• V-Blocks
• Thermo- meters
• Pressure Gauges
• Hydrostatic Pumps
• Test Weights

Inspecting

• Microscopes
• Magnifiers
• Inspection Mirrors
• Flaw Detectors
• Ultraviolet Lights
• Hardness Testers
• Scales
• Counters
• Force Gauges
• Water Quality & pH Testers
• Leak Detectors
• Multimeters & Electrical Testers

Motion & Speed Measuring

• Tachometers
• Encoders & Transducers
• Stroboscopes
• Vibration Meters

Office Supplies & Signs

https://www.mcmaster.com/products/office-supplies-signs

Office Supplies

• Markers, Pens & Pencils
• Clipboards & Binders
• Folders & Paper
• Organizers & Document Holders
• Telephones
• Intercoms & Radios
• Speakers
• Data & Voice Equipment
• Computer Accessories
• Calculators
• Drafting Equipment
• Clocks & Timers
• Reference Books
• Food Service Equipment

Signs

• Signs
• Sign Holders
• Tags
• Exit Signs
• Laminators
• Message & Bulletin Boards

Identification & Marking

• Floor Marking Tape & Paint
• Labels
• Label Printers
• Stencils & Characters
• Hand Stamps
• Engraving Plates & Tags
• Engravers

Pipe, Tubing, Hose & Fittings

https://www.mcmaster.com/products/pipe-tubing-hose-fittings

• Pipe Fittings & Pipe
• Pipe Hangers
• Pipe Joints
• Pipe & Tube Repair Clamps
• Pipe Flange Spreaders
• Tubing
• Tube Fittings
• Tube Cutters
• Tube Flaring Tools
• Tube Benders
• Manifolds
• Hose
• Hose Fittings
• Hose Nozzles
• Hose & Tube Clamps
• Hose Reels
• Tank Fittings

Plumbing & Janitorial

https://www.mcmaster.com/products/plumbing-janitorial

Plumbing & Janitorial

• Faucets & Showers
• Sinks & Wash Fountains
• Drinking Fountains
• Toilets & Urinals
• Plungers & Drain Cleaners
• Test Pumps, Plugs & Fittings
• Privacy Partitions
• Lavatory Mirrors & Fixtures
• Personal Care Products
• Paper Towels & Dispensers
• Dryers
• Hand Cleaners
• Cleaners & Deodorizers
• Tissues, Towels & Wipes
• Sponges & Brushes
• Garbage Bags
• Brooms, Mops & Squeegees
• Vacuums
• Floor & Carpet Cleaners
• Pressure Washers & Steam Cleaners
• Wash Guns & Spray Nozzles
• Sorbents

Power Transmission

https://www.mcmaster.com/products/power-transmission

Rotary Motion

• Bearings
• Bushings
• Bearing & Gear Pullers
• Bearing Heaters
• Motors
• Speed Reducers
• Clutches
• Brake & Clutch Lining
• Shafts
• Shaft Couplings
• Shaft Collars
• U-Joints
• Key Stock
• Pulleys
• Belts
• Belt Gauges
• Gears
• Chain
• Chain Tools
• Chain Tensioners
• Sprockets
• Drive Rollers
• Track Rollers
• Turntables

Linear Motion

• Actuators
• Bearings
• Shafts
• Shaft Collars
• Acme Threaded Rods
• Shock Absorbers
• Rod Ends
• Springs

Hydraulics

• Pumps
• Valves
• Hose
• Hose Fittings
• Filters
• Oil
• Reservoirs

Pneumatics

• Compressors
• Tanks
• Air Flow & Pressure Boosters
• Filter / Regulator / Lubricators (FRLs)
• Dryers
• Moisture Separators & Drain Valves
• Hose
• Quick-Disconnect Hose Couplings
• Valves
• Mufflers
• Pressure Gauges

Pressure & Temperature Control

https://www.mcmaster.com/products/pressure-temperature-control

Pressure

• Gauges
• Recorders
• Switches
• Transducers
• Regulators

Temperature

• Thermo- meters
• Recorders
• Thermo- couples
• Resistance Temperature Detectors (RTDs)
• Switches
• Thermostats
• Controllers
• Heat Exchangers
• Chillers
• Heaters

Pulling & Lifting

https://www.mcmaster.com/products/pulling-lifting

• Chain
• Wire Rope
• Fibrous Rope
• Chain & Rope Fittings
• Hooks
• Slings
• Lifting Magnets
• Hoist Rings
• Eyebolts
• Lifting Clamps
• Hoists
• Trolleys
• Winches
• Cranes
• Jacks
• Pulleys & Blocks
• Suction Cups
• Vacuum Cups
• Robotics

Raw Materials

https://www.mcmaster.com/products/pulling-lifting

• Metals
• Shim Stock
• Wire
• Wire Cloth
• Expanded Metal
• Plastics
• Ceramics
• Graphite
• Carbon Fiber
• Casting Compounds
• Rubber
• Foam
• Insulation
• Glass
• Wood
• Fabrics
• Felt
• 3D Printer Filaments

Safety Supplies

https://www.mcmaster.com/products/safety-supplies

Personal Protective Equipment

• Safety Glasses & Face Shields
• Earplugs
• Hard Hats
• Welding Helmets & Glasses
• Harnesses & Lanyards
• Clothing
• Respirators

Protective Equipment

• First-Aid Supplies
• Wash Stations
• Fire Extinguishers & Sprinklers
• Gas Detectors
• Lockouts
• Machine Guards
• Traffic Cones & Signs
• Belt, Chain & Rope Barriers
• Safety Railings
• Protective Screens
• Mirrors
• Video Surveillance
• Horns, Bells & Alarms
• Status-Indicating Lights
• Warning Lights
• Gloves
• Footwear

Signs

• Signs
• Tags
• Exit Signs
• Floor Marking Tape & Paint

Sawing & Cutting

https://www.mcmaster.com/products/sawing-cutting

Sawing

• Reciprocating Saw Blades
• Jigsaw Blades
• Handsaw Blades
• Band Saw Blades
• Circular Saw Blades
• Cutoff Wheels
• Saws
• Hole Saws

Cutting

• Knives
• Scalpels
• Scissors
• Snips
• Nibblers
• Bolt & Chain Cutters
• Scrapers
• Chisels
• Tube Cutters
• Tile Cutters
• Gasket Cutters
• Drum Deheaders
• Paper Cutters

Sealing

https://www.mcmaster.com/products/sealing

• O-Rings
• Compression Packing
• Packing Tools
• Gaskets
• Mechanical Seals
• Weather- stripping
• Sealants

Shipping

https://www.mcmaster.com/products/shipping

• Bags & Envelopes
• Tubes
• Boxes
• Drums & Pails
• Packing Material
• Stretch & Shrink Wrap
• Strapping & Strapping Tools
• Tape
• Tape Dispensers
• Labels
• Tags
• Security Seals
• Pallets
• Scales
• Desiccants

Suspending

https://www.mcmaster.com/products/suspending

• Strut Channel
• Pipe Hangers
• Tool Balancers
• U-Bolts
• Eyebolts
• Cable Ties
• Cable & Hose Carriers
• Beam Clamps
• Turnbuckles