Type 27 Wheels | McMaster-Carr

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System of Measurement

Inch

Diameter

4 1/2"

Grinding Wheel Designation

For Use On

Arbor Hole

Thickness

Arbor Hole Size

For Use With

Grit

Arbor Hole Thread Size

5/8"-11

Abrasive Material

Aluminum Oxide

Aluminum Oxide/Cotton Laminate Blend

Aluminum Oxide/Zirconium Oxide Blend

Ceramic

Nylon Mesh/Aluminum Oxide

Nylon Mesh/Silicon Carbide

Silicon Carbide

Form

Disc

Flap Disc

Maximum Rotation Speed

Grit Rating

Color

Grinding Wheel Shape

Surface Texture

Mount Type

Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

REACH

Arbor Hole Diameter

Disc Shape

RoHS

Backup Pads Required

Abrasive Bond Material

386 Products

Grinding Wheels for Angle Grinders

Long-Life Grinding Wheels for
Angle Grinders—Use on Metals

Wheels are a blend of aluminum oxide and zirconia alumina, which removes more material and lasts three times as long as our General Purpose Grinding Wheels. They are also known as Type 27 wheels, raised-hub wheels, and grinding discs.

General Purpose Grinding Wheels
for Angle Grinders—Use on Metals

A good value for everyday use, these wheels offer an economical balance between heavy material removal and long life. They are also known as Type 27 wheels, raised-hub wheels, and grinding discs.

High-Performance Grinding Wheels
for Angle Grinders—Use on Metals

A blend of ceramic alumina and zirconia alumina removes material at a 50% faster rate than our Long-Life Grinding Wheels. Wheels are also known as Type 27 wheels, raised-hub wheels, and grinding discs.

Grinding Wheels for Angle
Grinders—Use on Soft Metals

Bonded without any wax or rubber filler, these wheels resist material buildup. They are also known as Type 27 wheels, raised-hub wheels, and grinding discs.

Grinding Wheels for Angle
Grinders—Use on Steel Pipe

Made with reinforced aluminum oxide, these wheels are designed for light grinding, cutting, and notching in steel pipelines.

Contaminant-Free Grinding Wheels
for Angle Grinders—Use on Metals

The absence of iron, sulfur, and chlorine in these wheels means they won’t corrode or discolor stainless steel. They are also known as INOX wheels, Type 27 wheels, raised-hub wheels, and grinding discs.

Grinding Wheels with Nylon Mesh
for Angle Grinders—Use on Metals

Multiple layers of nylon mesh embedded with abrasive provide a cushioned grind. Also known as unitized discs or wheels.

General Purpose Curved-Surface Flexible Grinding
Wheels for Angle Grinders—Use on Metals

The flexible backing on these wheels conforms to curved and rough surfaces.

Grinding Wheels with Cotton Laminate
for Angle Grinders—Use on Metals

A blend of cotton laminate and aluminum oxide creates a smoother surface than other grinding wheels with similar grits. Wheels are also known as Type 27 wheels and raised-hub wheels.

Grinding Wheels for Angle
Grinders—Use on Nonmetals

Silicon carbide cuts through concrete and stone without generating much heat. Wheels are also known as Type 27 wheels, raised-hub wheels, and grinding discs.

Sanding Discs

Nylon Mesh Cushioned Arbor-Mount Sanding Discs

The abrasive-embedded mesh construction gives you more control over sanding pressure, creating finer and more consistent finishes.

Fast-Cutting Nylon Mesh Cushioned
Arbor-Mount Sanding Discs

Nylon mesh is embedded with precision-shaped ceramic alumina, which cuts through hard metals like stainless steel faster than other forms of ceramic alumina because of its sharp, outwardly pointed grit.

Nylon Mesh Cushioned Arbor-Mount Sanding
Discs for Stainless Steel and Hard Metals

Used for stripping, these discs eliminate discoloration from heat buildup.

Fast-Cutting Flap Sanding Discs
for Stainless Steel and Hard Metals

These discs have a harder abrasive than standard flap sanding discs.

Cool-Sanding Flap Sanding Discs
for Stainless Steel and Hard Metals

The flaps have an abrasive to remove material and a lubricant that minimizes heat to reduce discoloration of the work surface.

Trimmable Flap Sanding Discs for
Stainless Steel and Hard Metals

Replace your sanding discs less often—the backing plate on these discs can be trimmed off as the abrasive flaps wear down, allowing you to use more of the disc.

Nylon Mesh Cushioned Flap Sanding Discs

When you need to achieve a more consistent finish, choose nylon mesh sanding discs over paper- or cloth-backed discs.

Cool-Sanding Flap Sanding Discs

The flaps alternate between an abrasive to remove material and a lubricant that minimizes heat to reduce discoloration of the work surface.

Trimmable Flap Sanding Discs

Replace your sanding discs less often—the backing plate on these discs can be trimmed off as the abrasive flaps wear down, allowing you to use more of the disc.

Long-Life Trimmable Flap Sanding Discs

These discs have 30% more flaps than standard flap sanding discs to last longer.

Cool-Sanding Flap Sanding Discs for
Aluminum, Soft Metals, and Nonmetals

The flaps have an abrasive to remove material and a lubricant that minimizes heat to reduce discoloration of the work surface.

Cutoff Wheels for Angle Grinders

Flush-Cut Angle Grinder Cutoff Wheels for Metal

Also known as Type 27, raised-hub, and depressed-center cutoff wheels, these wheels outperform Type 1 wheels when making flush cuts in metal.

Angle Grinder Cutoff Wheels for Sheet Metal

Often used on duct, these ultra-thin wheels make fast, clean cuts in thin metal that minimize burrs and discoloration from heat.

Quick-Change Angle Grinder
Cutoff Wheels for Metal

With an X-shaped arbor hole, these wheels quickly and safely click into X-lock grinders without wrenches or flange nuts.

Angle Grinder Cutoff Wheels
for Cutting and Deburring Metal

Switch between cutting and deburring aluminum, iron, stainless steel, and steel without the need to change your wheel.

Angle Grinder Cutoff Wheels
for Cutting and Notching Metal

Made of premium grade abrasives, these wheels are strong and thick for making notches in aluminum, iron, stainless steel, and steel.

Angle Grinder Cutoff Wheels
for Masonry and Concrete

Make cuts in hard, brittle materials such as firebrick, stone, and concrete.

Flush-Cut Angle Grinder Cutoff
Wheels for Stainless Steel

Also known as Type 27, raised-hub, and depressed-center cutoff wheels, these wheels outperform Type 1 wheels when making flush cuts.

Flush-Cut Contaminant-Free Angle
Grinder Cutoff Wheels for Stainless Steel

Also known as Type 27, raised-hub, and depressed-center cutoff wheels, these wheels outperform Type 1 wheels when making flush cuts.

Angle Grinder Cutoff Wheels for
Cutting and Notching Stainless Steel

Made of premium grade abrasives, these wheels are strong and thick for making notches in stainless steel.

Flush-Cut Angle Grinder Cutoff Wheels
for Aluminum, Brass, and Copper

Also known as Type 27, raised-hub, and depressed-center cutoff wheels, these wheels outperform Type 1 wheels when making flush cuts.

Flush-Cut Angle Grinder
Cutoff Wheels for Hard Metal

Made of ceramic alumina, these wheels last 10 times longer than standard cutoff wheels when cutting hard metal, such as tool steel. These wheels, also known as Type 27, raised hub, and depressed-center cutoff wheels, outperform Type 1 wheels when making flush cuts.

Flush-Cut Straight Grinder Cutoff Wheels for Metal

Also known as Type 27, raised-hub, and depressed-center cutoff wheels, these wheels outperform Type 1 wheels when making flush cuts in metal.

Grinding Wheels for Angle Grinders

Long-Life Grinding Wheels forAngle Grinders—Use on Metals

General Purpose Grinding Wheelsfor Angle Grinders—Use on Metals

High-Performance Grinding Wheelsfor Angle Grinders—Use on Metals

Grinding Wheels for AngleGrinders—Use on Soft Metals

Grinding Wheels for AngleGrinders—Use on Steel Pipe

Contaminant-Free Grinding Wheelsfor Angle Grinders—Use on Metals

Grinding Wheels with Nylon Meshfor Angle Grinders—Use on Metals

General Purpose Curved-Surface Flexible GrindingWheels for Angle Grinders—Use on Metals

Grinding Wheels with Cotton Laminatefor Angle Grinders—Use on Metals

Grinding Wheels for AngleGrinders—Use on Nonmetals

Sanding Discs

Nylon Mesh Cushioned Arbor-Mount Sanding Discs

Fast-Cutting Nylon Mesh CushionedArbor-Mount Sanding Discs

Nylon Mesh Cushioned Arbor-Mount SandingDiscs for Stainless Steel and Hard Metals

Fast-Cutting Flap Sanding Discsfor Stainless Steel and Hard Metals

Cool-Sanding Flap Sanding Discsfor Stainless Steel and Hard Metals

Trimmable Flap Sanding Discs forStainless Steel and Hard Metals

Nylon Mesh Cushioned Flap Sanding Discs

Cool-Sanding Flap Sanding Discs

Trimmable Flap Sanding Discs

Long-Life Trimmable Flap Sanding Discs

Cool-Sanding Flap Sanding Discs forAluminum, Soft Metals, and Nonmetals

Cutoff Wheels for Angle Grinders

Flush-Cut Angle Grinder Cutoff Wheels for Metal

Angle Grinder Cutoff Wheels for Sheet Metal

Quick-Change Angle GrinderCutoff Wheels for Metal

Angle Grinder Cutoff Wheelsfor Cutting and Deburring Metal

Angle Grinder Cutoff Wheelsfor Cutting and Notching Metal

Angle Grinder Cutoff Wheelsfor Masonry and Concrete

Flush-Cut Angle Grinder CutoffWheels for Stainless Steel

Flush-Cut Contaminant-Free AngleGrinder Cutoff Wheels for Stainless Steel

Angle Grinder Cutoff Wheels forCutting and Notching Stainless Steel

Flush-Cut Angle Grinder Cutoff Wheelsfor Aluminum, Brass, and Copper

Flush-Cut Angle GrinderCutoff Wheels for Hard Metal

Flush-Cut Straight Grinder Cutoff Wheels for Metal

Flush-Cut Straight Grinder Cutoff Wheels for Metal

Long-Life Grinding Wheels for
Angle Grinders—Use on Metals

General Purpose Grinding Wheels
for Angle Grinders—Use on Metals

High-Performance Grinding Wheels
for Angle Grinders—Use on Metals

Grinding Wheels for Angle
Grinders—Use on Soft Metals

Grinding Wheels for Angle
Grinders—Use on Steel Pipe

Contaminant-Free Grinding Wheels
for Angle Grinders—Use on Metals

Grinding Wheels with Nylon Mesh
for Angle Grinders—Use on Metals

General Purpose Curved-Surface Flexible Grinding
Wheels for Angle Grinders—Use on Metals

Grinding Wheels with Cotton Laminate
for Angle Grinders—Use on Metals

Grinding Wheels for Angle
Grinders—Use on Nonmetals

Fast-Cutting Nylon Mesh Cushioned
Arbor-Mount Sanding Discs

Nylon Mesh Cushioned Arbor-Mount Sanding
Discs for Stainless Steel and Hard Metals

Fast-Cutting Flap Sanding Discs
for Stainless Steel and Hard Metals

Cool-Sanding Flap Sanding Discs
for Stainless Steel and Hard Metals

Trimmable Flap Sanding Discs for
Stainless Steel and Hard Metals

Cool-Sanding Flap Sanding Discs for
Aluminum, Soft Metals, and Nonmetals

Quick-Change Angle Grinder
Cutoff Wheels for Metal

Angle Grinder Cutoff Wheels
for Cutting and Deburring Metal

Angle Grinder Cutoff Wheels
for Cutting and Notching Metal

Angle Grinder Cutoff Wheels
for Masonry and Concrete

Flush-Cut Angle Grinder Cutoff
Wheels for Stainless Steel

Flush-Cut Contaminant-Free Angle
Grinder Cutoff Wheels for Stainless Steel

Angle Grinder Cutoff Wheels for
Cutting and Notching Stainless Steel

Flush-Cut Angle Grinder Cutoff Wheels
for Aluminum, Brass, and Copper

Flush-Cut Angle Grinder
Cutoff Wheels for Hard Metal