3M™ Cubitron™ 3 Flap Disc 1169F 4-1/2" x 7/8" 60+ Grit

Re-Engineered 3M Precision-Shaped Grain with Curved Sides. Blends and Finishes Up to 49% Faster. Heavyweight Y-Weight Polyester Backing.

The 3M™ Cubitron™ 3 Flap Disc 1169F (4-1/2" x 7/8", 60+ Grit) brings next-generation ceramic cutting speeds, smooth surface blending, and single-step finishing directly to your structural steel fabrication yard, pressure vessel welding shop, or stainless steel manufacturing bay. Purpose-built to eliminate the slow grinding performance of legacy alumina zirconia discs, the tedious multi-step process required when transitioning from heavy grinding to final surface prep, and the risk of gouging expensive workpieces, this premium 60+ medium-coarse grit ceramic flap disc sets a high industry benchmark. It equips structural welders, pipefitters, sheet metal fabricators, and industrial mechanics with a high-performance abrasive asset explicitly optimized to blend weld seams, deburr sharp sheet metal edges, remove light scale, and prep metal surfaces cleanly in a single pass.

Revolutionary grain geometry and heavy-duty structural backing serve as the engineering foundation for the 1169F series. Powered by re-engineered 3M Precision-Shaped Grain featuring curved sides, the ceramic micro-crystalline structures continually fracture under medium pressure to reveal razor-sharp edges that slice cleanly through metal rather than plowing through substrate. This self-sharpening mechanical action enables the disc to remove up to 49% more total material than previous-generation 3M Cubitron II flap discs while operating cooler to prevent thermal bluing. Built with a durable Y-weight polyester backing, individual overlapping flaps break down uniformly to expose fresh mineral throughout the life of the disc, delivering a refined, consistent finish that simplifies paint and powder-coat prep on standard 4-1/2" angle grinders.

Why the 3M™ Cubitron™ 3 1169F 60+ Grit Flap Disc Leads the Metalworking Bay:

• Re-Engineered Precision-Shaped Grain: Advanced curved-edge ceramic grain technology fractures cleanly into razor-sharp points for smooth blending and fast cutting.
• Up to 49% Higher Total Material Removal: Proven to outperform legacy 969F and standard zirconia flap discs, significantly lowering your total abrasive consumption spend.
• Precision Surface Blending & Finishing: Medium-coarse 60+ grit removes light weld beads aggressively while leaving a refined surface finish ready for prep.
• Heavy-Duty Y-Weight Polyester Backing: Rigid flap construction resists edge fraying during intense deburring and edge working along sharp sheet metal.
• Universal 7/8" Center Hole Arbor Fitment: Drops directly onto standard 4-1/2" angle grinders with conventional flange mounting hardware.

Specifications