Discs | McMaster-Carr

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System of Measurement

Diameter

Shape

Length

Material

OD

ID

Thickness

0.001" to 0.003"

0.002" to 0.004"

0.004" to 0.006"

0.005" to 0.006"

0.005" to 0.024"

0.005" to 0.030"

Color

Mount Type

Quick-Change Fastener

Unthreaded Hole

Screw Size

For Use On

Metal Bond Diamond Wheels

Vitrified Bond Wheels

Export Control Classification Number (ECCN)

RoHS

Compliant with Exemptions

DFARS Specialty Metals

REACH

Performance

Abrasion Resistant

Chemical Resistant

Corrosion Resistant

Easy Thermoform

Electrically Insulating

Erosion Resistant

Grit

Washer Type

Width

Form

Disc with Pull Tab

Shank-Mount Pad

Hardness

Durometer 30 OO

Hardness Rating

Tolerance Rating

For Use With

Ball Bearing Housings

Ball Bearing Outer Rings

Bench Grinder Wheels

Bench-Top Cutoff Saws

Buffing Machines

Electrical Terminals

Floor-Buffing Machines

Floor-Mount Cutoff Saws

Specifications Met

California AB1953

Federal Specification

NACE MR0175/ISO 15156

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25,797 Products

Most Likely Products

Aluminum

Lightweight, easy to machine, and corrosion resistant—all with material certificates for traceability

Sanding Discs

Add to sanders, floor buffers, and other tools to smooth out workpieces and remove paint and rust

Steel

Strong, machinable, and weldable—all with material certificates for traceability

Plastic

A lightweight alternative to metal and glass

Washers

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

Stainless Steel

Stainless Steel

Resists corrosion and chemicals in most environments—all with material certificates for traceability

Glass

Clear and highly heat and chemical resistant; often used in sights, lighting, and lab equipment

All Results

Raw Materials

Aluminum

Lightweight, easy to machine, and corrosion resistant—all with material certificates for traceability

Steel

Strong, machinable, and weldable—all with material certificates for traceability

Plastic

A lightweight alternative to metal and glass

Stainless Steel

Stainless Steel

Resists corrosion and chemicals in most environments—all with material certificates for traceability

Glass

Clear and highly heat and chemical resistant; often used in sights, lighting, and lab equipment

Copper

Our most conductive metal for electrical applications—all with material certificates for traceability

Brass

More machinable than copper and bronze—all with material certificates for traceability

Ceramic

Hard and wear resistant, it also withstands corrosion and high temperatures

Lead

A dense insulator often used to shield against radiation and absorb sound and vibration

Garolite

A strong, machinable alternative to metal and plastic widely used in circuit boards and gears

Foam

Pockets of air make it lighter in weight than rubber; good for packing, insulating, and sealing

Felt

Thicker and more absorbent than fabric for insulating, polishing, cushioning, and gasketing

Rubber

Compresses and bounces back to shape; often used for sealing, cushioning, and shock absorbing

Bronze

Better wear resistance than copper and brass—all with material certificates for traceability

Titanium

The most corrosion-resistant metal we offer—all with material certificates for traceability

Graphite

Compressible or conductive for making high-temperature seals, furnace parts, and crucibles

Hard Fiber

Chemically treated to be hard and dense, this is the easiest composite to machine in our offering

Nickel

An upgrade from stainless steel to withstand harsh chemicals and acids—all with material certificates for traceability

Carbon Fiber

The strongest composite we offer; comparable in strength to 6061 aluminum but lighter in weight

Wood

Commonly used to build ramps, crates, and prototypes or to make repairs

Cobalt

Resists impact and rapid temperature changes—all with material certificates for traceability

Fiberglass

A lightweight alternative to metal and wood widely used in electrical and structural applications

Molybdenum

Retains its shape and strength in extreme temperatures—all with material certificates for traceability

Niobium

Conductive and corrosion resistant even at extreme temperatures—all with material certificates for traceability

Fabricating and Machining

Sanding Discs

Add to sanders, floor buffers, and other tools to smooth out workpieces and remove paint and rust

Sanding Backup Pads

Sanding Backup Pads

Attach sanding discs to power tools and reinforce the discs

Sanding Pads

Reach into pipes, tubes, corners, and slots to smooth their surfaces and remove paint and rust

Sanding Blocks

For better control than powered sanders, sand surfaces manually

Grinding Wheels

Grinding Wheels

Add to grinders to remove material from work surfaces using abrasion

Grinding Wheel Truing Tools

Grinding Wheel Truing Tools

Reshape worn grinding wheels so they'll continue to run straight

Grinding Wheel Dressers

Grinding Wheel Dressers

Clean grinding wheels and expose fresh grains to rejuvenate their cutting ability

Cutoff Wheels

Install in grinders to cut through metal, concrete, and ceramics

Grinding Bits

Pair with grinders for light material removal and precision grinding

Grinder Spindle Adapters

Grinder Spindle Adapters

Convert grinder spindles to thread sizes that work with grinding wheels and sanding discs

Wire Brushes

Scrub by hand or connect to power tools to clean, polish, deburr, and remove rust

Rotary Tool Cutoff Wheels

Rotary Tool Cutoff Wheels

Replace the cutoff wheel on your Dremel rotary tool

Rotary Tool Blades

Rotary Tool Blades

Replace the blade on your Dremel rotary tool

Rotary Tool Accessories

Rotary Tool Accessories

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

Rotary Tool Buffing and Polishing Kits

Rotary Tool Buffing and Polishing Kits

Buff, polish, and clean with rotary tools

Rotary Tool Grinding Bits

Rotary Tool Grinding Bits

Pair with rotary tools to sharpen, deburr, and grind metal surfaces

Spiral Saw Cutoff Wheels

Spiral Saw Cutoff Wheels

Attach to your RotoZip spiral saw to make straight cuts

Cutoff Saw Wheels

Cutoff Saw Wheels

Replace the wheel on your cutoff saw

Buffing and Polishing Pads

Buffing and Polishing Pads

Remove imperfections and apply protective coatings on delicate surfaces

Buffing and Polishing Wheels

Buffing and Polishing Wheels

Remove surface imperfections to achieve a precise, flat finish

Buffing and Polishing Wheel Flanges

Buffing and Polishing Wheel Flanges

Connect wheels with a center hub to bench grinders and buffers

Buffing and Polishing Wheel Cleaning Rakes

Buffing and Polishing Wheel Cleaning Rakes

Remove dried compound and recondition your wheels

Buffing Kits

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

Polishing Bonnets

Polishing Bonnets

Remove swirl marks and imperfections from a surface after buffing

Buffing and Polishing Applicator Bonnets

Buffing and Polishing Applicator Bonnets

Apply waxes and polishing compounds before buffing and polishing

Lapping Film

Polish workpieces without the mess of pastes and slurries

Sanding Disc Trimmers

Sanding Disc Trimmers

Save the usable inner part of worn sanding discs by cutting the perimeter down a size

Fastening and Joining

Washers

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

Cushioning Washers

Cushioning Washers

Cushion joints to dampen vibration and protect them from wear

Sealing Washers

Sealing Washers

Prevent fluids from leaking around fasteners

Finishing Washers

Finishing Washers

Screw heads sit flush to prevent snagging and to create a neat, finished appearance

Lock Washers

Resist vibration to prevent fasteners from loosening

Insulating Washers

Insulating Washers

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

Leveling Washers

Leveling Washers

Curved or tapered to compensate for uneven mounting surfaces

Shims

Align and space components on shafts, or level machinery, cabinets, and doors

Magnets

Attract or repel metal objects to hang, secure, or position them

Electromagnets

Place on flat metal surfaces and turn on the power to create a magnetic hold

Tape

Bind, seal, and mark surfaces

Adhesives

Bond surfaces together

Solder

Join pieces of metal without melting the base material

Hook and Loop

Press to interlock pieces and fasten materials together

Snap-Together Fasteners

Snap-Together Fasteners

Mate the mushroom-shaped heads to join materials together with more holding power than hook and loop

Building and Machinery Hardware

Bumpers

Absorb impact to protect equipment and surfaces from dents and scuffs

Protective Feet

Protective Feet

Add to furniture and light equipment to protect floors from scratches and wear

Sealing

Gasket Material

Gasket Material

Cut custom shapes and sizes to fill gaps between flat surfaces

Tube Fitting Gaskets

Tube Fitting Gaskets

Prevent leaks when connecting sanitary tube fittings

Power Transmission

Springs

Apply and absorb force with compression, die, extension, torsion, and disc springs

Bearing Lock Washers

Bearing Lock Washers

Lock bearing nuts in place to prevent loosening due to vibration

Fluid Handling

Filter Mesh

Strain particles out of various substances

Sintered Filters

Sintered Filters

Tiny holes let particles such as air, gas, and vapor pass through while trapping contaminants

Filter Paper

Remove particles from liquids in lab testing and other filtration applications

Tube Fitting Markers

Tube Fitting Markers

Snap onto push-to-connect fittings to identify different tubing lines

Pressure-Relief Discs

Pressure-Relief Discs

Rupture at a set pressure or temperature to vent fluid and gas and protect machinery; one-time use

Heating Elements

Heating Elements

Turn electrical current into heat

Communication

Tags

Hang throughout facilities to convey information

Labels

Stick onto items to identify or convey information about them

Floor Decals

Stick to the floor to give instructions or direct traffic in and around your facility

CDs

Record audio for playback on a computer or stereo

DVDs

Record video for playback on a computer or DVD player

Calendars

Wall, wet erase, and dry erase calendars to keep track of dates and appointments

Facility and Grounds Maintenance

Drain Cleanout Hole Covers

Drain Cleanout Hole Covers

Conceal drain cleanout plugs in walls and floors while keeping them accessible

Floor Drain Covers

Floor Drain Covers

Put a lid on open drains to prevent accidents and injuries

Drain Cleanouts

Drain Cleanouts

Create an access point to inspect and clean floor drain pipelines

Electrical

Electrical-Terminal Washers

Electrical-Terminal Washers

Prevent wires from slipping out from under screw heads to keep electrical connections intact

Wire and Cable Stripper Blades

Wire and Cable Stripper Blades

Snap into cordless wire strippers to quickly and safely remove insulation

Measuring and Inspecting

Micrometer Check Gauges

Micrometer Check Gauges

Confirm your outside or depth micrometers are accurate

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