15W512 - Walter ALLSTEEL 5-Inch x 7/8-Inch 120 Grit Zirconia Flap Disc

Economical High-Performance Abrasive for Steel

The Walter 15W512 ALLSTEEL™ Flap Disc is engineered to provide industrial operators with a reliable, cost-effective solution for general steel fabrication and finishing. Measuring 5 inches in diameter with a standard 7/8-inch arbor, this disc integrates seamlessly into most industrial angle grinders. The 120 grit configuration is specifically designed for finishing applications, allowing users to smooth out weld seams, blend surfaces, and prepare steel for painting or coating with exceptional consistency.

At the core of the ALLSTEEL™ performance is a revolutionary zirconia alumina abrasive grain blend. Unlike standard aluminum oxide discs that dull quickly, zirconia alumina is self-sharpening. As the disc is used, the abrasive grains fracture to reveal new, sharp cutting edges. This mechanism ensures that the removal rate remains high throughout the lifespan of the product, reducing operator fatigue by requiring less pressure to achieve the desired finish. For MRO departments and fabrication shops, this translates to higher throughput and consistent quality control across batches.

One of the standout features of the Walter ALLSTEEL™ line is the trimmable backing. In conventional flap discs, the abrasive cloth often wears down to the edge of the backing plate, forcing the operator to discard the disc even though usable abrasive material remains closer to the center. Walter’s design allows the backing to be trimmed down, exposing fresh abrasive flaps and significantly extending the usable life of each unit. This feature makes the 15W512 an incredibly economical choice for high-volume shops looking to reduce consumable waste and lower their cost per grind.

Whether you are deburring heavy materials, blending sharp corners, or achieving exquisite fillet weld finishes, the ALLSTEEL™ flap disc delivers industrial-grade results. It is optimized for steel processing, ensuring that it does not glaze over or contaminate the workpiece. By choosing the 15W512, you are investing in a product that balances aggressive material removal with the finesse required for high-quality surface finishing.