Deburr, Blend and Finish Stainless Steel
3M Cloth Belt 777F contains a grinding aid that reduces running temperatures when used on heat-sensitive alloys like stainless steel, nickel alloys and cobalt alloys. The abrasive grain is bonded to the backing with resin to maintain durability under high heat and pressure. This belt is recommended for use on stainless steel or other exotic metal alloys for dimensioning parts, deburring, blending, and finishing castings and forgings.
Ceramic Abrasive Grain Boosts Performance
For increased performance, 777F products feature aluminum oxide blended with 3M ceramic abrasive grain for a harder, longer-lasting abrasive. Ceramic/aluminum oxide blend surpasses aluminum oxide abrasives in cut-rate and durability and makes the Cloth Belt 777F an excellent choice for moderate stock removal and surface preparation.
Sized to Suit Your Needs
These abrasive belts are available in various widths and lengths for sanding both wood and metal. We offer a broad selection of belts to fit most any industrial belt sander. Wider belts are used with wide belt sanders to dimension or finish wood panels, smooth rough-cut edges of metal sheets, or add a grain pattern to stainless steel sheets. Medium-width belts fit onto edge sanders for sanding flat, narrow surfaces such as panel edges; and narrow belts are used with portable belt sanders for sanding or blending wood pieces such as cabinet doors.
Find Your Flex
Belts come with various flexibilities and splices that join the belt ends. Our 3M Cloth Belt 777F has a film splice for added strength when grinding in high pressure applications. When greater flexibility may be needed to increase conformity or for a softer touch for finishing and blending, an L-flex provides more flexibility than the standard flex, and a full flex belt is the most flexible.
Applications
- Moderate stock removal
- Deburring stainless steel
- Finishing stainless steel
- Surface preparation

Dynabrade 58435 6" Dia. DynaLocke Dual-Action Sander, Non-Vacuum
Dynabrade 21457 ND3071, Red Plastic Cover
Dynabrade 90499 1/2" W x 34" L 120 Grit A/O DynaCut Belt, 50/pack
3M 26120, PPS Series 2.0 Adapter, Type S28, 17.5 mm Female, 19 TPI
Thread, 7100135956
Dynabrade 50767 Spring Pin
Dynabrade 95843 Dynabrade Air Lube 10W/NR, 1 Gallon
Dynabrade 78165 1-1/4" Dia. x 80 Grit S/C Non-Vacuum PSA DynaCut Disc 25/pack
Dynabrade 79901 3-1/2" Dia. x 120 Grit A/O Non-Vacuum PSA DynaCut Disc, 100/box
Dynabrade 90407 1/8" W x 24" L 80 Grit A/O DynaCut Belt, 50/pack
Dynabrade 57405 3-2/3" W x 7" L Dynaline Sander Versatility Kit, Non-Vacuum
Dynabrade 91497 2" Dia. Type R CLEO Wool Locking-Type Disc, 10/pack
Dynabrade 95600 Tune-Up Kit for .5 hp Motor
Dynabrade 93534 3" Mandrel for Sanding Stars, 3-48 Male Thread
Dynabrade 91429 1/2" W x 12" L 80 Grit A/O DynaCut Belt, 50/pack
Dynabrade 92245 - 4" (102 mm) Dia. x 3/4" (19 mm) W Bent Coarse Wire Wheel
Dynabrade 48337 .4 hp 7 Degree Offset Die Grinder, Rear Exhaust, 30,000 RPM, 1/4" Collet
3M 26022, PPS Series 2.0 Adapter, Type S12, 10 mm Male, 1.0 mm Thread, 7100135943
Dynabrade 11280 Contact Arm Ass'y, 1" Da. x 3/8" W, Tapered Rubber Wheel, No Platen/Offset Design
Dynabrade 48500 2" Dia. 7 Degree Offset Disc Sander, Rear Exhaust, .4 HP, 25,000 RPM
Dynabrade 92114 1/2" W x 12" L 180 Grit A/O DynaCut Belt, 50/pack
Dynabrade 68101 Coolant Filtration System, 230 V (AC), 1 Phase, 50 Hz
Dynabrade 79572 3-1/2" W x 15-1/2" L Premium Very Fine NWN DynaBrite Belt
Dynabrade 13402 Dynisher Finishing Tool, Rear Exhaust, 3,400 RPM, 5/8-11" Spindle Thread
Dynabrade 11475 Dynabelter Abrasive Belt Tool, Standard Duty
Dynabrade 12205 Stockade Reciprocating Saw, .4 HP, 2,400 SPM
Dynabrade 64401 36" W x 60" L (914 mm W x 1,524 mm L) Metal Capture Downdraft Table, 460 V (AC), Down Exhaust
Dynabrade 53251 7" Dia. Vertical Disc Sander
Dynabrade 78055 1" W x 24" L Medium NWN DynaBrite Belt, 10/pack
Dynabrade 95850 - 1/4" Female Coupler with 1/4" Female Plug Assembly
Dynabrade 90549 1/2" W x 44" L 120 Grit A/O DynaCut Belt, 50/pack
Dynabrade 90297 1/2" W x 18" L Coarse NWN DynaBrite Premium Belts, 10/pack
3M 26016, PPS Series 2.0 Adapter, Type S9, 16 mm Male, 1.5 mm Thread, 7100135330
Dynabrade 52218 .5 hp 7 Degree Offset Die Grinder, Front Exhaust, Long Shank, 20,000 RPM, 1/4" Collet
Dynabrade 12204 Stockade Reciprocating Sander, .4 HP, 2,400 SPM
Dynabrade 48203 .4 hp Straight-Line Die Grinder, Rear Exhaust, 30,000 RPM, 1/4" Collet
Dynabrade 78710 5/16" x 5/8"-B53 Dynacut A/O Mounted Point, 5/pack
Dynabrade 52632 4-1/2" Dia Right Angle Depressed Center Wheel Grinder, 1.3 HP, 12,000 RPM, 5/8"-11 Spindle
3M 35083, EMI Copper Foil Shielding Tape 1181, 1/4 in x 18 yd (6,35 mm x 16,5 m), 7000132168
Dynabrade 52515 4-1/2" Dia. Right Angle Disc Sander, Rear Exhaust, .55 HP, 15,000 RPM, 5/8"-11 Thread
3M 22408, Roloc Disc 361F, P100 YF-weight, TR, 1-1/2 in, Die R150S, 7000045101 
