Grinding Bit Sets | McMaster-Carr

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33 Products

Grinding Bit Sets for Metals

Each set contains a selection of grinding bits. All include bits made of aluminum oxide, which is the most common abrasive used for grinding metal. These bits are also known as mounted points and die grinder bits.

Caution: As bit shank is exposed beyond _1/2", maximum safe rpm decreases significantly. Refer to ANSI standard B7.1. Use only accessories that have a greater rpm rating than the maximum speed of the grinder you choose.

For Steel, For Stainless Steel, For Aluminum, For Brass, For Bronze, For Copper, For Iron, and For Nickel—Sets for steel, stainless steel, aluminum, brass, bronze, copper, iron, and nickel contain bits made from a range of abrasive materials in different shapes and sizes. They’ll help you achieve varying levels of finish on a wide range of materials. Cotton laminate/aluminum oxide blend bits remove more material than rubber-cushioned aluminum oxide bits, and they’ll create a nicer finish than vitrified ceramic alumina bits. Bits with nylon mesh remove the least material but create the nicest finish.

			Abrasive
	No. of Pieces	Includes	Material	Bond Material	Shank Lg.	Color	Grit (Surface Texture)		Each
For Steel and Iron







				1/8" Diameter Shank

				12	Foam Block Stand; Two each: B42, B44, B46, B52, B53, B103	Aluminum Oxide	Vitrified Clay	1 1/2"	Orange	60 (Rough)	0000000	000000


				20	Dressing Stone; One each: A24, B42, B51, B52, B54, B61, B90, B91, B102, B111, B112, B121, B122, B123, B131, B135, W185, W201, W202, W203	Aluminum Oxide	Vitrified Clay	1 1/2"	Red	80 (Smooth)	0000000	00000
				50	Foam Block Stand; Two each: B97, Six Each: B44, W144, W145, W154, W163, W170, W176, W185	Aluminum Oxide	Vitrified Clay	1 1/2"	Red	36 (Rough)	00000000	000000
				50	Foam Block Stand; Two each: B97, Six Each: B44, W144, W145, W154, W163, W170, W176, W185	Aluminum Oxide	Vitrified Clay	1 1/2"	Red	60 (Rough)	0000000	000000
				144	Foam Block Stand; Nine each: B44, B52, B97, B121, W142, W144, W145, W153, W154, W162, W163, W170, W175, W176, W185, W200	Aluminum Oxide	Vitrified Clay	1 1/2"	Red	60 (Rough)	0000000	000000




						1/8" Diameter Shank, 1/4" Diameter Shank

						100	Foam Block Stand; Five each: A1, A3, A4, A11, A12, A24, A38, W164, W185, W220, with 1/4" Shank; Five each: B42, B44, B52, B53, B111, B131, W144, W154, W163, W185, with 1/8" shank	Aluminum Oxide	Vitrified Clay	1 1/2"	Orange	60 (Rough)	0000000	000000




								1/4" Diameter Shank

								20	Dressing Stone; One each: A24, B42, B51, B52, B54, B61, B90, B91, B102, B111, B112, B121, B122, B123, B131, B135, W185, W201, W202, W203	Aluminum Oxide	Vitrified Clay	1 1/2"	Red	80 (Smooth)	0000000	00000


								50	Foam Block Stand; Five each: A2, A5, A12, A37, A38, W185, W186, W187, W205, W219	Aluminum Oxide	Vitrified Clay	1 1/2"	Red	36 (Rough)	00000000	000000
								50	Foam Block Stand; Five each: A2, A5, A12, A37, A38, W185, W186, W187, W205, W219	Aluminum Oxide	Vitrified Clay	1 1/2"	Red	60 (Rough)	0000000	000000


								For Steel, Aluminum, and Iron







												1/8" Diameter Shank

												36	Cardboard Block Stand; Three each 100 Grit: B53, W163, W182; Three each 60 Grit: B52, W185; Three each 80 Grit: B52, B53, B122, W163, W182, W185	Aluminum Oxide	Vitrified Ceramic	1 1/2"	Blue, Pink	60 (Rough), 80 (Smooth), 100 (Smooth)	0000000	00000


												For Steel, Stainless Steel, Aluminum, Brass, Bronze, Copper, Iron, and Nickel







																1/8" Diameter Shank

																72	Cardboard Block Stand; B121 (14 total, 60-240 grit); B132 (9 total, 60-80 grit); B52 (16 total, 60-240 grit); W154 (9 total, 60-100 grit); W182 (9 total, 60-80 grit); W185 (15 total, 60-240 grit)	Aluminum Oxide, Aluminum Oxide/Cotton Laminate Blend, Ceramic, Nylon Mesh/Aluminum Oxide, Nylon Mesh/Silicon Carbide	Rubber, Synthetic Resin, Vitrified Ceramic	1 1/2"	Black, Blue, Brown, Gray, Pink, White	60 (Rough), 80 (Smooth), 100 (Smooth)	0000000	000000

Rotary Tool Engraving Bit Kits for Dremel Grinders

For engraving and carving, these kits contain a variety of Dremel-compatible bits.

	For Mfr. Model No.	Includes		Each
1/8" Diameter Shank



	11	100, 100-N/7, 200, 3000, 3000-1/24, 7760-N/10, 8220, 8220-1/28, 8240, 8250, 8260	Four Engraving Cutters, Seven Grinding Bits, Plastic Storage Case	0000000	000000

Miniature Grinding Bit and Disc Sets

Sets contain an assortment of tools for grinding, sanding, and cutting on small surface areas. All have aluminum oxide bits for grinding hard metal.

58 Pieces—58-piece sets include diamond bits for grinding metal, ceramics, and plastics.

134 Pieces—134-piece sets include silicone carbide bits for grinding soft metal.

	Abrasive Material	Color		Each
For Steel, Stainless Steel, Aluminum, Brass, Bronze, Copper, Iron, Nickel, Titanium, Ceramic, and Plastic







	1/8" Diameter Shank

	58	Six Aluminum Oxide Grinding Bits, Six Diamond Grinding Bits, 26 Cutoff Discs, One Collet, One Mandrel for Cutoff Discs, Six Cleaning Brushes, Six Engraving Cutters, Six Polishing Bobs, Plastic case	21,000	Aluminum Oxide, Diamond	Blue, Brown	0000000	000000


	For Steel, Aluminum, Brass, and Bronze







					1/8" Diameter Shank

					134	Six Aluminum Oxide Grinding Bits, 16 Aluminum Oxide Sanding Bands, 36 Cutoff Wheels, 64 Cutoff Discs, Four Silicon Carbide Grinding Bits, One Mandrel for Cutoff and Sanding Discs, One Rubber Drum for Sanding Bands, Six Aluminum Oxide Grinding Discs, Plastic case	30,000	Aluminum Oxide, Silicon Carbide	Brown, Gray	0000000	00000

Grinding and Polishing Kits for 3D Printed Parts

Finish the edges of metal, polymer, and plastic 3D printed parts with the bits, burs, wheels, and brushes in these kits.

	Abrasive Material	Grit (Surface Texture)		Each
For Aluminum, Brass, Bronze, Copper, Fiberglass, Iron, Nickel, Plastic, Rubber, Stainless Steel, Steel, and Titanium







	3/32" Diameter Shank

	25	Three Diamond Grinding Bits, Three Carbide Burs, Two Aluminum Oxide Polishing Bobs, Two Aluminum Oxide Grinding Wheels, One Diamond Cutoff Wheel, One Mandrel with 3/32" Shank, Three Engraving Cutters, Eight Aluminum Oxide Wheel Brushes, Two Silicon Carbide Grinding Wheels, Metal Case	21,000	Aluminum Oxide, Carbide, Diamond, Silicon Carbide	80 (Smooth) to 280 (Extra Smooth)	000000	0000000

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. Their _3/32” diameter shank and small head make them great for tasks with fine details.

			Abrasive
	No. of Pieces	Includes	Material	Bond Material	Grit (Surface Texture)		Each
For Steel, Stainless Steel, Aluminum, Brass, Bronze, Copper, Iron, Nickel, Titanium, Ceramic, and Plastic







				3/32" Diameter Shank

				6	One Ball Grinding Bit with 1 1/2" Shank Lg., One Cone Grinding Bit with 1 1/2" Shank Lg., One Inverted Cone Grinding Bit with 1 1/2" Shank Lg., One Taper Grinding Bit with 1 3/8" Shank Lg., Two Cylindrical Grinding Bits with 1 1/4" Shank Lg., Plastic Block Stand	Diamond	Vitrified Ceramic	120 (Smooth) Yellow	0000000	0000000

Rotary Tool Chucks

A rotary tool chuck connects these bits to rotary tools that accept a _1/8" shank diameter. Swap out accessories on your Dremel without tools.

For Shank Dia.	Mfr. Model No.	For Mfr. Model No.	Mounting Hole Thread Size	Body Material	Jaw Material		Each
1/32" to 1/8"	4486	100, 200, 212, 225, 275, 285, 300, 395, 398, 400, 575, 750, 770, 780, 800, 3000, 4000, 7700, 8050, 8200, 8220	1/4"-40	Steel	Steel	0000000	000000

Rubber-Cushioned Abrasive Grinding Bit Sets for Metals

The bits in this set have rubber blended into the abrasive, which cushions during grinding to produce a smooth to extra-smooth surface texture.

Aluminum oxide bits are for grinding hard metals.

Silicon carbide bits are for grinding soft metals.

				Abrasive
	No. of Pieces	Includes	Max. Rotation Speed, rpm	Material	Bond Material	Grit (Surface Texture)		Each
For Steel, Aluminum, Brass, and Bronze



		126	30 Silicon Carbide and 10 Aluminum Oxide 15/16" Lg. × 1/4" Dia. Bits; 30 Silicon Carbide and 10 Aluminum Oxide 7/8" Dia. Tapered-Edge Discs; 30 Silicon Carbide and 10 Aluminum Oxide 7/8" Dia. × 1/8" Thick Straight Discs; Four 1/8" Dia. Mandrels; Two Spiral Mandrels with Hex Nut; Paper and Plastic Case	21,000	Aluminum Oxide, Silicon Carbide	Rubber	120 (Smooth) to 240 (Extra Smooth)	0000000	000000


		For Steel, Stainless Steel, Aluminum, Brass, Bronze, Copper, Iron, Nickel, and Titanium



				68	8 each: No. 4, No. 6, No. 8, No. 10, No. 11, No. 12, No. 14, and No. 15 Grinding Bits; Two No. 4 Mandrels; Two No. 6 Mandrels; Plastic case	25,000	Silicon Carbide	Rubber	46 (Rough) to 240 (Extra Smooth)	0000000	000000


				For Steel, Aluminum, Brass, Copper, and Stainless Steel



						24	8 each A2, A25, W220 Grinding Bits with 1 1/2" Lg. × 1/4" Dia. Shank; Cardboard Block Stand	25,500	Aluminum Oxide	Rubber	46 (Rough) to 100 (Smooth)	0000000	000000


						36	12 each: B52, B121, W185 Grinding Bits with 1 1/2" Lg. × 1/8" Dia. Shank; Cardboard Block Stand	34,500	Aluminum Oxide	Rubber	46 (Rough) to 100 (Smooth)	0000000	000000


						For Steel, Brass, Bronze, Copper, Stainless Steel, Iron, Nickel, and Titanium



								63	15 each: B52, W154, W164, W185 Grinding Bits with 1 1/2" Lg. × 1/8" Dia. Shank; One W220 Grinding Bit with 1 1/2" Lg. × 1/4" Dia. Shank; Two W179 Grinding Bits with 1 1/2" Lg. × 1/4" Dia. Shank; Plastic case	25,500	Aluminum Oxide	Rubber	46 (Rough) to 180 (Smooth)	0000000	000000

Hex-Shank Grinding Bit Sets for Metals


	Hex Shank

Set contains a selection of our most popular hex-shank grinding bits. Use them in any drill chuck that accepts a _1/4" hex shank.

Bits are aluminum oxide, which is the most common abrasive used in grinding metal. They are also known as mounted points and die grinder bits.

			Abrasive
	No. of Pieces	Includes	Material	Bond Material	Shank Lg.	Grit (Surface Texture)		Each
For Steel and Iron







				1/4" Hex Shank

				12	One each: A5, A12, A15, W178, Two each: A21, A24, A38, W218; Foam Block Stand	Aluminum Oxide	Vitrified Ceramic	1 1/2"	60 (Rough) Gray	0000000	000000

Sanding Bits

	Each
00000000	0000000
00000000	000000
00000000	000000
00000000	000000

Grinding Bit Sets for Nonmetals

Best for grinding composites, fiberglass, plaster, plastic, rubber, and wood without generating heat, these sets include a selection of our most popular tungsten carbide bits. The bits are also known as mounted points and die grinder bits.

	Shank Lg.	Grit (Surface Texture)		Each
For Composites, Fiberglass, Plaster, Plastic, Rubber, and Wood







	1/8" Diameter Shank

	7	1 1/4" Dia. Cutoff Wheel, Barrel Grinding Bit, Disc Grinding Bit, Two Cylindrical Bits, Two Cone Bits	Tungsten Carbide	7/8"	36 (Rough) Bronze	0000000	0000000


	7	1 1/4" Dia. Cutoff Wheel, Barrel Grinding Bit, Disc Grinding Bit, Two Cylindrical Bits, Two Cone Bits	Tungsten Carbide	7/8"	50 (Rough) Bronze	0000000	000000

Hazardous Location Upblast Roof-Mount Exhaust Fans

With a UL-listed motor, these fans can be used in hazardous environments with combustible gases and dust to draw stagnant and humid air out through your roof, forcing it up and away from its surface.

Direct Drive

Image of Product. Front orientation. Exhaust Fans. Hazardous Location Upblast Roof-Mount Exhaust Fans.

Direct-drive fans have fewer moving parts than belt-drive fans for less maintenance.

	Exhaust Fans														Mounting Bases
						Overall
	Blade Dia.	Airflow @ SP	Volume (Sound) @ Distance	Motor Speed, rpm	Power, hp	Dia.	Ht.	Base Wd.	Wt., lb.	Max. Ambient Temp., ° F	Housing Material	Hazardous Location Rating		Each		Each
Totally Enclosed Motor Enclosure







				120/240V AC, Single Phase—Hardwire

				24"	3,900 ft³/min @ 1/2 in. H₂O 6,900 ft³/min @ 0 in. H₂O	75 dBA @ 5 ft.	1,150	3/4	33"	25"	36"	340	100	Steel	NEC Class I Divisions 1, 2 Groups C, D; NEC Class II Divisions 1, 2 Groups E, F, G	0000000	000000000	0000000	0000000


				30"	5,900 ft³/min @ 1/2 in. H₂O 9,350 ft³/min @ 0 in. H₂O	72 dBA @ 5 ft.	1,150	1	39"	28"	42"	370	100	Steel	NEC Class I Divisions 1, 2 Groups C, D; NEC Class II Divisions 1, 2 Groups E, F, G	0000000	00000000	0000000	000000