4-1/2" x 5/8"-11 T27 Zirconia High Density Flap Disc - 1 Piece

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Product Specification

4-1/2" X 5/8"-11 T27 ZIRCONIA HIGH DENSITY FLAP DISC - 1 PIECE

Built for demanding grinding jobs where standard flap discs can run out of usable abrasive too quickly, this 4-1/2" T27 zirconia high density flap disc uses a thicker Jumbo construction with more flaps than a regular-density disc. The added abrasive volume gives fabricators more grinding material to work through, while the self-sharpening zirconia grain continually exposes fresh cutting edges under the heat and pressure of metal grinding.

The flat T27 profile is especially well suited for shaped and non-flat workpieces such as fence posts, gates, risers, tubing, edges, and fabricated assemblies. Its overlapping flaps provide the flexibility and surface control needed to grind, blend, deburr, and progressively refine irregular workpieces without relying on a rigid grinding wheel.

The 5/8"-11 threaded hub adds convenience by allowing the disc an easy spin-on spin-off attachment to compatible angle grinders without a separate retaining nut. Combined with the thicker High Density/Jumbo construction, durable zirconia grain, and computer-controlled flap placement, this disc is built for users who want more abrasive capacity and quick accessory changes for repeated grinding work.

Quantity: 1 Piece

Product Specifications

Product Features

• True High Density / Jumbo construction with more flaps than regular-density flap discs
• 1/2" thick profile provides more usable abrasive material
• Self-sharpening zirconia grain continually exposes fresh cutting edges as the disc wears
• 5/8"-11 threaded hub provides convenient spin-on, spin-off installation
• T27 flat face is well suited for shaped and non-flat surfaces
• Overlapping flap construction combines grinding, blending, deburring, and surface refinement
• X-weight polycotton cloth backing provides strong abrasive support

Materials & Applications

Best For:

• Carbon steel
• Structural steel
• Stainless steel
• Cast iron

Additional Materials:

• Titanium
• Nickel
• Wrought iron
• Copper
• Fiberglass
• Plastic
• Hard rubber
• Wood
• Stone

Common Applications:

• Grinding and blending welds on shaped or non-flat surfaces
• Fence posts, gates, risers, tubing, and fabricated assemblies
• Heavy stock removal
• Deburring and edge cleanup
• Removing surface imperfections
• Surface preparation
• Repeated fabrication and maintenance grinding
• General repair work

Machine Compatibility

Designed for compatible 4-1/2" to 5" angle grinders with a 5/8"-11 spindle.

For a Benchmark option, use the Benchmark Abrasives 4-1/2" corded angle grinder, which uses a 5/8"-11 spindle and is compatible with properly rated threaded accessories.

Because High Density/Jumbo flap discs are thicker than regular-density discs, always confirm proper guard clearance before use. The grinder's operating speed must not exceed the flap disc's 13,300 RPM maximum.

Safety Tips

• Inspect the flap disc before use and do not use a damaged disc.
• Never exceed the maximum rated speed of 13,300 RPM.
• Confirm the 5/8"-11 threaded hub is fully and securely mounted before operation.
• Verify proper guard clearance for the thicker High Density construction.
• Use the proper grinder guard and side handle.
• Wear appropriate eye, hearing, respiratory, and hand protection.
• Secure the workpiece and maintain control of the grinder throughout use.
• Dry use only.