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.

Dynabrade 10640 Valve Assembly
Dynabrade 60200 - 3,000 lb. Jack with No Pad
Dynabrade 1/2" W x 24" L Abrasive Belt Assortment Pak DynaCut Coated Zirconia Alumina & DynaBrite Surface Conditioning Belts
Dynabrade 56596 Clip-Muffler
Dynabrade 79367 5" Dia. x 320 Grit A/O Hook & Loop, Multi-Hole Vacuum Film-Backed DynaCut Disc, 100/Box
Dynabrade 61502 Systainer T-Loc, Size I
Dynabrade 51150 5" Dia. Disc Backup Pad, Medium Density, 5/8"-11 Thread
Dynabrade 57800 3-2/3" W x 7" L Dynabug Orbital Sander, Non-Vacuum, .24 HP, 8,000 RPM, 3/16" Orbit
Dynabrade 79039 1" W x 18" L 60 Grit A/Z DynaCut Belt, 50/pack
Dynabrade 01120 Rotor
Dynabrade 55242 Vane Set (4pk)
Dynabrade 51629 .1 hp Straight-Line Pencil Grinder, Central Vacuum, 1/8" Collet
Dynabrade 50210 3" Dia. Right Angle Disc Sander, Self-Generated Vacuum, 15,000 RPM
Dynabrade 56236 8" Dia. Non-Vacuum Disc Pad, Hook-Face, Short Nap
Dynabrade 64003 SuperFinisher, 230 Volts (AC), 1 Phase, 50 Hz
Dynabrade 98267 - 3/8" Male Coupler with 3/8" Male Plug Assembly
Dynabrade 91721 DynaMesh 5" 400 Grit Hook & Loop Discs, 50 per box 
