Flap Discs Do Double Duty
Grind and finish in a single step with the 3M™ Flap Disc 747D. Flap discs provide the stock removal capabilities of a bonded wheel with the surface finishing characteristics of a resin fiber disc.
Lower cost per grind and fewer process steps in applications such as weld grinding, deburring, rust removal, edge grinding, and weld seam blending make our flap disc desirable when it’s an option.
Our 3M Flap discs exhibit lower gouge potential than that of grinding wheels and fiber discs. Operators prefer the discs because they are lighter in weight and easier to control. And because they do double duty, there is less downtime to change product. Also, less vibration and noise mean less operator fatigue.
While these flap discs are particularly suited to working with stainless steel, their versatility allows them to work effectively on other metals as well.
Overlapping Flaps Use All the Abrasive Grain
We attach a series of abrasive cloth flaps to a backing in a fan-like arrangement around a hub. The working mineral is consolidated on the edge of the disc so a maximal amount of the working material is utilized. As the flaps wear during use, new cutting grain is continually exposed to the work surface, so they can far outlast typical discs.
By reducing steps and lasting longer, our flap discs can greatly improve productivity in grinding operations.
Quick-Change Attachment System
The 747D quick-change flap disc features a TN-style attachment system. Screw the old disc off and the new one onto the shaft of your right angle grinder with two or three swift twists. Less time lost to change-over means more producing material.
3M knows efficiency is key to your operations. We leverage a broad platform of technological expertise to build solutions to keep your business and your employees working smoothly.

3M 71358, 641WY 1/4" X 24", 600 Mesh Diamond Cloth Belt, 7010534894
Dynabrade 95821 Dynabrade Air Lube 10W/NR, 4oz Bottle
Dynabrade 98273 - 1/2" Female Coupler with 1/2" Male Plug Assembly
Dynabrade 14000 Dynafile Abrasive Belt Tool
3M 27359, Cloth Belt 970DZ, 24 YN-weight, 25 in x 75 in, Film-lok, Single-flex, 7010361224, 2 per case
3M™ 37018, Supplied Air Respirator Vortex Cooling Assembly V-100/37018(AAD), 70070799013, 1 EA/Case
3M 33780, 641WY 1/4" X 24", 400 Mesh Diamond Cloth Belt, 7010534915
Dynabrade 95848 Dynabrade Gear Oil
3M 53046, Drywall Sanding Sheets 53046-A, 4-3/16 in x 11-1/4 in M-127, 150 grit, 7010340446
Insize 4120-20, METRIC THREAD RING GAGE, GO, M20x2.5, 6928640341519
3M 11000, Roloc Disc 361F, 24 YF-weight, TR, 2 in, Die R200P, 7000028183
3M 33501, Sanding Respirator, 03201, 7000120129, 2 per pack
3M 21543, Scotch-Brite Roloc Clean and Strip XT Pro Extra Cut Disc, TR, 2 in x NH, A XCS, 7100179815, 60/box
ACS Diamond Cloth Belt, CX1250 1" X 72" 125U
Dynabrade 77765 4-1/2" Dia. x 7/8" Center Hole, 120 Grit, Type 27, Ceramic DynaCut Flap Disc, 10/pack
3M™ 17379, Versaflo™ Length Adjusting Breathing Tube BT-30, 7100009685, 1 EA/Case
Dynabrade 11684 Dynabelter Contact Arm Assembly 4" DIA X 5/8" W., 40 Duro Serrated
3M™ 07011, Supplied Air Respirator Hose W-9435-50/07011(AAD), 7000005373, 1 EA/Case
ACS CX1250 Diamond Belt, 1/2" X 24" 30u
3M 20913, PSA Cloth Disc 348D, 36 X-weight, 2 in x NH, Die 200P, 7000118919
3M 22404, Roloc Disc 361F, 80 YF-weight, TR, 3 in, Die R300V, 7000045100 
