120 Grit Grinding Bits | McMaster-Carr

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436 Products

Grinding Bits

Grinding Bits for Metals

Made of aluminum oxide, these bits are well suited for use on most metals and materials that are not heat sensitive.

Rubber-Cushioned Abrasive Grinding Bits for Metals

The abrasive grains in these bits are blended with rubber, which cushions during grinding to produce a smoother surface texture than other bits with similar grits.

Rubber-Cushioned Abrasive Grinding
Bits without Shank for Metals

Bits attach to mounted shanks so you can quickly switch head shapes without removing the shank. The abrasive grains are blended with rubber, which cushions during grinding to produce a smoother surface texture than other bits with similar grits.

Miniature Rubber-Cushioned
Abrasive Grinding Bits for Metals

Produce a smooth surface on precise, intricate grinding jobs.

Grinding Bits for Stainless Steel

Bits are specially formulated to stay cool during grinding, so they won’t mar or discolor stainless steel.

Grinding Bit Sets for Metals

Each set contains a selection of our most popular grinding bits.

Long-Life Grinding Bits for Metals

Similar to diamond, boron nitride is harder than aluminum oxide and lasts longer. Bits are also known as jig grinding pins and mandrels.

Cotton-Laminate Grinding Bits for Metals

Made of cotton fiber layers embedded with aluminum-oxide grains, these bits grind and finish in one step.

Miniature Grinding Bits for Metals

The small 3/32" diameter shank and small head makes these bits good for precise and intricate jobs.

Long-Life Grinding Bits for Nonmetals

The diamond abrasive in these bits is extremely hard and lasts longer than tungsten carbide. For longer tool life and improved finish, use a water- or oil-soluble mist or coolant.

Grinding Bits for Nonmetals

Almost as hard as diamond, these tungsten carbide bits cut through nonmetals without generating heat.

Miniature Long-Life Grinding Bits for Nonmetals

Made with diamond abrasive, these bits are extremely hard and last longer than tungsten carbide. They have a small shank and head for precise and intricate jobs.

Miniature Multipurpose Grinding Bits

Grind a variety of materials, from metal to ceramic and plastic, in precise, detailed jobs.

Miniature Multipurpose Grinding Bit Sets

Best for intricate, precise grinding jobs on metal, ceramic, and plastic, these sets include diamond abrasive bits with different head shapes.

Sanding Bits, Drums, and Sleeves

Replaceable-Cap Sanding Bits for
Stainless Steel and Hard Metals

The ceramic alumina grit in these bits is sharp and dense enough to shape hard metals such as stainless steel, nickel, and cast iron without dulling quickly.

Replaceable-Cap Sanding
Bits for Countersunk Holes

Choose a bit with the same angle as your countersink to debur the inside of the hole.

Spiral-Wound Sanding Rolls

As the outer layer wears away, new abrasive is exposed.

Spiral-Wound Sanding Rolls with Shank

The secure bond of the roll to the integrated shank prevents loosening from vibration while sanding, resulting in a smooth finish.

Spiral-Wound Sanding Rolls for
Stainless Steel and Hard Metals

Coated with ceramic alumina abrasive, these rolls are sharp and dense enough to shape hard metals such as stainless steel, nickel, and cast iron without dulling quickly.

Sanding Pads for Internal and Irregular Surfaces

Sand inside pipes, tubes, and hard to reach corners with these pads.