Tru-maxx 51033967M Square Polishing Stone 320 Grit 6 in

Product Description

The TRU-MAXX 51033967M is a square polishing stone made from silicon carbide abrasive, designed for deburring, honing, and surface finishing of metal and other hard materials. At 6 inches in overall length with a 1-inch square cross-section, this stone is sized for bench use or hand-held finishing work. The 320 grit rating places it in the extra fine range, making it well-suited for final-stage surface prep, edge cleanup, and light stock removal on close-tolerance components. It is not oil-filled, so no pre-soaking is required before use. Machinists, toolmakers, maintenance technicians, and metalworking professionals commonly reach for this type of stone when a consistent, repeatable finish is needed.

This polishing stone is used across a wide range of metalworking and maintenance applications including mold and die work, valve seat finishing, flat surface honing, and general deburring of machined parts. Its square profile allows flat face contact on edges and recesses that round or wedge stones cannot reach. The extra fine 320 grit is appropriate for finishing passes where material removal is minimal and surface smoothness is the primary goal. It is suitable for use in shops, on production floors, and in field maintenance settings.

Key Features

• Silicon carbide abrasive construction for consistent cutting action on ferrous and non-ferrous metals
• 320 grit extra fine rating for final-stage finishing and light deburring
• Square profile provides flat face contact on edges, slots, and recesses
• 6-inch overall length offers a full working surface for bench or hand-held use
• Not oil-filled, ready to use dry or with a compatible honing fluid
• 1-inch square cross-section allows uniform pressure distribution across the stone face

Compatibility

Designed as a general-purpose bench and hand polishing stone for use on metal surfaces, mold and die components, and machined parts requiring extra fine surface finishing.

Installation Notes

No power tools are required for standard hand-lapping or bench honing use. Secure the workpiece firmly before applying the stone to avoid inconsistent contact. A light application of honing oil or coolant may extend stone life and improve surface finish, though the stone can also be used dry. Inspect the stone face periodically for glazing or uneven wear and dress as needed to maintain consistent abrasive action.