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 15132 Wave Spring, Flat Wire
Dynabrade Nitro Series EB3 - 3" Extended Buffer
Dynabrade 59134 Air Motor Cylinder Assembly
Dynabrade 59183 6" Dia. Dynorbital-Spirit Random Orbital Sander, Central Vacuum, 3/32" Orbit
Dynabrade 90409 1/8" W x 24" L 120 Grit A/O DynaCut Belt, 50/pack
Dynabrade 54775 4" (102 mm) Dia. Right Angle Type 27 Depressed Center Wheel Grinder, .7 HP, 13,500 RPM, 3/8"-24 Spindle
Dynabrade 53165 Planetary Carrier
Dynabrade 61461 Raptor Vac Electric Portable Vacuum System, 7.9 Gallon, 120 V
Dynabrade 91709 DynaMesh 3" 400 Grit Hook & Loop Discs, 50 per box
Dynabrade 79591 1-1/2" W x 30" L Coarse Dynaprep Premium Plus Belt, 10/pack
Dynabrade 93172 4" Dia. X 1/4" Dia. Shank, 320 Grit, A/O, Spindle-Mount Sanding Star
Dynabrade 47800 .4 hp Right Angle Die Grinder, Front Exhaust, 12,000 RPM, 1/4" Collet
Dynabrade 61465 Raptor Vac Air Powered Portable Vacuum System, 6.25 Gallon
Dynabrade 93243 8" Dia. x 1/2" Center Hole, 80 Grit, A/O, Arbor-Mount Sanding Star
Dynabrade 78467 2" Dia. x 3/4", 8-32 Female Center Thread, A/O, 120 Grit, 8-Ply J-DynaCut Cross Pad, 100/pack
Dynabrade 56755 .4 hp Straight-Line Die Grinder, Central Vacuum, 25,000 RPM, 1/4" Collet
Dynabrade 13442 Shroud
Dynabrade 58021 - 3/8" (10 mm) Dia. Non-Vacuum Dynafine Backsplash Radius Disc Pad, Vinyl-Face
Dynabrade 11360 Contact Arm Ass'y, 5/8" Dia. x 3/8" W, Rubber Wheel, No Platen/Offset Design
Dynabrade 78728 1/8" x 3/8"-B97 Dynacut A/O Mounted Point, Vitrified, 5/pack
Dynabrade 78781 1/2" x 1/2"-W185 Dynacut Cotton Fibre Polishing Mounted Point, 120GFX, 10/pack
Dynabrade 61201 RaptorVac Electric DrumVac Kit, Dual Operator, For Use With Tools
Dynabrade 92762 3" W x 50' L 30 Micron Diamond Microfinishing Film DynaCut Roll
Dynabrade 47211 .4 hp 7 Degree Offset Die Grinder, Rear Exhaust, 3,200 RPM, 1/4" Collet
Dynabrade 91128 1" W x 18" L 120 Grit A/O DynaCut Beltm, 50/pack
Dynabrade 92751 2" W x 50' L 3 Micron, Diamond Lapping Film DynaCut Roll
Dynabrade 15101 Tension Arm (for Mini Dynafile II)
Dynabrade 52213 .5 hp 7 Degree Offset Die Grinder, Front Exhaust, Short Shank, 24,000 RPM, 1/4" Collet
Dynabrade 52415 3" Dia. 7 Degree Offset Disc Sander, Rear Exhaust, .7 HP, 20,000 RPM, 3/8"-24 Thread
Dynabrade 92758 3" W x 150' L 9 Micron A/O Lapping Film DynaCut Roll
Dynabrade 90471 1/4" W x 30" L 180 Grit A/O DynaCut Belt 50/pack
Dynabrade 11213 Contact Arm Ass'y, 5/16" Dia. x 3/8" W, Steel Wheel, with 1/2" W Platen
Dynabrade 11204 Contact Arm Ass'y, 1" Dia. x 3/8" W, Radiused Rubber Wheel, Loose Belt Application
Dynabrade 51076 Spindle Housing
Dynabrade 56183 6" Dia. Vacuum Disc Pad, Hook-Face, Short Nap
Dynabrade 64350 26" W x 36" L (660 mm W x 914 mm L) Metal Capture Downdraft Station, 230 V (AC)
Dynabrade Nitro Series NF1 Nitrofile Abrasive Belt Tool 
