Trimmable Sanding Discs | McMaster-Carr

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Diameter

4 1/2"

Grit

120

Grinding Wheel Designation

For Use On

Arbor Hole

Backing Plate Material

Abrasive Material

Disc Shape

Mount Type

Maximum Rotation Speed

Arbor Hole Thread Size

Form

Arbor Hole Diameter

For Use With

Grit Rating

Material

For Finish

For Sanding

Thread Size

REACH

Performance

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

RoHS

Compliant

Not Compliant

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

EAR99

Rotation Speed

Less than 10,000 rpm

11,000 rpm to 19,999 rpm

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How can we improve?

25 Products

Performance

Clog Resistant

Resist buildup of dust and debris

12 products

Useful Life Rating

Long

Stay sharp longer than other discs

6 products

Disc Shape

Flat

The most common disc shape

9 products

Angled

Make better contact on irregular surfaces than flat discs

16 products

Trimmable Arbor-Mount Flap Sanding Discs

Flat

Angled

Use every inch of these sanding discs. The soft plastic backing plate can be trimmed as the flaps wear down, so you won't have to replace the disc until all the abrasive is gone. To sand contoured and irregular surfaces, adjust how much the flaps overhang the backing plate. Discs mount onto your tool’s arbor.

Cloth Abrasive Backing—Resist tearing and hold up to wet sanding better than paper-backed discs.

Zirconia Alumina Abrasive—A step up from aluminum oxide. Zirconia alumina's tough grains remove material faster and last longer but require heavy pressure to cut properly.

Threaded Arbor Hole—These discs don’t need a nut to secure, so they're quicker to change out than unthreaded arbors.

Flat Disc—The standard shape.

Angled Disc—Make better contact on irregular surfaces than flat discs, so they're good for sanding bumps, contours, and edges.

Grit—The lower the grit number, the rougher the finish and the duller the appearance. The higher the grit number, the more polished the finish and the more satin or mirrored the appearance.

	Arbor Hole	Abrasive Backing Material	Disc Shape	For Use On	For Use With	Backing Plate Material	Max. Rotation Speed, rpm	Choose a Grit		Each
Zirconia Alumina Abrasive







	For Rough Finish

	4 1/2"	—	5/8"-11	Threaded	Cloth	Flat	Steel	Angle Grinders	Plastic	13,300	40, 60, 80	4216A15	000000


	4 1/2"	—	5/8"-11	Threaded	Cloth	Angled	Steel, Wood	Angle Grinders	Plastic	13,300	40, 60, 80	4216A115	00000
	4 1/2"	7/8"	—	Unthreaded	Cloth	Angled	Steel, Wood	Angle Grinders	Plastic	13,300	40, 60, 80	4216A125	00000
	5"	—	5/8"-11	Threaded	Cloth	Angled	Steel, Wood	Angle Grinders	Plastic	12,200	40, 60, 80	4216A135	00000




			For Smooth Finish

			4 1/2"	—	5/8"-11	Threaded	Cloth	Angled	Steel, Wood	Angle Grinders	Plastic	13,300	120	4216A114	00000


			4 1/2"	7/8"	—	Unthreaded	Cloth	Angled	Steel, Wood	Angle Grinders	Plastic	13,300	120	4216A124	00000
			5"	—	5/8"-11	Threaded	Cloth	Angled	Steel, Wood	Angle Grinders	Plastic	12,200	120	4216A134	00000

Long-Life Arbor-Mount Flap Sanding Discs for Stainless Steel and Hard Metals


	Flat

With more abrasive than other flap discs for hard metals, these last 30-40% longer. The overlapping flaps expose new grit as you work for steady material removal and even finishes. Mount discs on your tool’s arbor.

Cloth Abrasive Backing—Resist tearing and hold up to wet sanding better than paper-backed discs.

Ceramic Alumina Abrasive—The sharp edges cut quickly for efficient material removal.

Threaded Arbor Hole—These discs don’t need a nut to secure, so they're quicker to change out than unthreaded arbors.

Flat Disc—The standard shape.

Plastic Backing Plate—Trim the flaps as they wear to extend the life of the disc.

Grit—The lower the grit number, the rougher the finish and the duller the appearance. The higher the grit number, the more polished the finish and the more satin or mirrored the appearance.

													Each
	Dia.	Arbor Hole Dia.	Arbor Hole Thread Size	Arbor Hole	Abrasive Backing Material	Disc Shape	For Use On	For Use With	Backing Plate Material	Max. Rotation Speed, rpm	Choose a Grit		1-9	10-Up
Ceramic Alumina Abrasive







				For Rough Finish

				4 1/2"	—	5/8"-11	Threaded	Cloth	Flat	Iron, Nickel, Stainless Steel, Steel, Titanium	Angle Grinders	Plastic	12,000	40, 60, 80	1339A24	000000	000000


				4 1/2"	7/8"	—	Unthreaded	Cloth	Flat	Iron, Nickel, Stainless Steel, Steel, Titanium	Angle Grinders	Plastic	12,000	40, 60, 80	1339A25	00000	00000
				5"	7/8"	—	Unthreaded	Cloth	Flat	Iron, Nickel, Stainless Steel, Steel, Titanium	Angle Grinders	Plastic	12,000	40, 60, 80	1339A26	00000	00000
				7"	—	5/8"-11	Threaded	Cloth	Flat	Iron, Nickel, Stainless Steel, Steel, Titanium	Angle Grinders	Plastic	8,500	40, 60, 80	1339A27	00000	00000

Trimmable Arbor-Mount Flap Sanding Discs for Stainless Steel and Hard Metals

Flat

Angled

Sand hard metals, trim the disc, and then sand some more. These discs have sharp, durable abrasive with a slick coating that prevents dust and debris from building up. With a soft plastic backing plate, you can trim the flaps as they wear and only need to replace the disc when all the abrasive is gone. To sand contoured and irregular surfaces, adjust how much the flaps overhang the backing plate. Discs mount onto your tool’s arbor.

Cloth Abrasive Backing—Resist tearing and hold up to wet sanding better than paper-backed discs.

Aluminum Oxide Abrasive—The most versatile and affordable abrasive we offer. Aluminum oxide is the go-to choice for general purpose sanding.

Ceramic Alumina Abrasive—The sharp edges cut quickly for efficient material removal.

Threaded Arbor Hole—These discs don’t need a nut to secure, so they're quicker to change out than unthreaded arbors.

Flat Disc—The standard shape.

Angled Disc—Make better contact on irregular surfaces than flat discs, so they're good for sanding bumps, contours, and edges.

Grit—The lower the grit number, the rougher the finish and the duller the appearance. The higher the grit number, the more polished the finish and the more satin or mirrored the appearance.

	Arbor Hole	Abrasive Backing Material	Disc Shape	For Use On	For Use With	Backing Plate Material	Max. Rotation Speed, rpm	Choose a Grit		Each
Aluminum Oxide Abrasive







	For Rough Finish

	4 1/2"	—	5/8"-11	Threaded	Cloth	Flat	Iron, Nickel, Stainless Steel, Steel, Titanium	Angle Grinders	Plastic	13,300	40, 60, 80	4216A33	000000


	4 1/2"	—	5/8"-11	Threaded	Cloth	Angled	Iron, Nickel, Stainless Steel, Steel, Titanium	Angle Grinders	Plastic	13,300	40, 60, 80	4216A32	00000
	4 1/2"	7/8"	—	Unthreaded	Cloth	Angled	Iron, Nickel, Stainless Steel, Steel, Titanium	Angle Grinders	Plastic	13,300	40, 60, 80	4216A31	00000




			For Smooth Finish

			4 1/2"	—	5/8"-11	Threaded	Cloth	Flat	Iron, Nickel, Stainless Steel, Steel, Titanium	Angle Grinders	Plastic	13,300	120	4216A334	00000


			4 1/2"	—	5/8"-11	Threaded	Cloth	Angled	Iron, Nickel, Stainless Steel, Steel, Titanium	Angle Grinders	Plastic	13,300	120	4216A324	00000
			4 1/2"	7/8"	—	Unthreaded	Cloth	Angled	Iron, Nickel, Stainless Steel, Steel, Titanium	Angle Grinders	Plastic	13,300	120	4216A314	00000


			Ceramic Alumina Abrasive







							For Rough Finish

							4 1/2"	—	5/8"-11	Threaded	Cloth	Angled	Iron, Nickel, Stainless Steel, Steel, Titanium	Angle Grinders	Plastic	13,300	40, 60, 80	4216A215	00000


							4 1/2"	7/8"	—	Unthreaded	Cloth	Angled	Iron, Nickel, Stainless Steel, Steel, Titanium	Angle Grinders	Plastic	13,300	40, 60, 80	4216A225	00000
							5"	—	5/8"-11	Threaded	Cloth	Angled	Iron, Nickel, Stainless Steel, Steel, Titanium	Angle Grinders	Plastic	12,200	40, 60, 80	4216A235	00000




									For Smooth Finish

									4 1/2"	—	5/8"-11	Threaded	Cloth	Angled	Iron, Nickel, Stainless Steel, Steel, Titanium	Angle Grinders	Plastic	13,300	120	4216A214	00000


									4 1/2"	7/8"	—	Unthreaded	Cloth	Angled	Iron, Nickel, Stainless Steel, Steel, Titanium	Angle Grinders	Plastic	13,300	120	4216A224	00000
									5"	—	5/8"-11	Threaded	Cloth	Angled	Iron, Nickel, Stainless Steel, Steel, Titanium	Angle Grinders	Plastic	12,200	120	4216A234	00000

Long-Life Trimmable Arbor-Mount Flap Sanding Discs


	Flat

With more abrasive flaps, these discs last longer than other trimmable flap sanding discs. Trim the soft plastic backing plate as the flaps wear down and you won't have to replace the disc until all the abrasive is gone. To sand contoured and irregular surfaces, adjust how much the flaps overhang the backing plate. Discs mount onto your tool’s arbor.

Cloth Abrasive Backing—Resist tearing and hold up to wet sanding better than paper-backed discs.

Zirconia Alumina Abrasive—A step up from aluminum oxide. Zirconia alumina's tough grains remove material faster and last longer but require heavy pressure to cut properly.

Flat Disc—The standard shape.

Grit—The lower the grit number, the rougher the finish and the duller the appearance. The higher the grit number, the more polished the finish and the more satin or mirrored the appearance.

	Abrasive Backing Material	Disc Shape	For Use On	For Use With	Backing Plate Material	Max. Rotation Speed, rpm	Choose a Grit		Each
Zirconia Alumina Abrasive







	For Rough Finish

	4 1/2"	7/8"	Unthreaded	Cloth	Flat	Steel, Wood	Angle Grinders	Plastic	13,300	40, 60, 80	6689N17	00000


	5"	7/8"	Unthreaded	Cloth	Flat	Steel, Wood	Angle Grinders	Plastic	12,200	40, 60, 80	6689N18	00000