Sunnen Products Company K3-NV69 CBN Stone 280 Grit K3 Series

Sunnen K3-NV69 CBN Stone, 280 grit, is a metal-bond cubic boron nitride honing stone in Sunnen’s K3 Series (SKU K3NM69). This 280-grit CBN tool is designed for precision bore finishing, delivering efficient material removal and a consistent surface finish when used with Sunnen honing equipment. The K3 family is engineered for reliable performance in bore-finishing tasks on hardened metals, providing predictable wear and stable dimensions across cycles. The NV69 designation identifies this specific stone within Sunnen’s catalog, reflecting the company’s focus on high-precision abrasive solutions for bore finishing. As part of the K3 series, it supports repeatable, dimensionally stable results in machining operations that rely on Sunnen’s honing technology and accessories. Intended for precision bore finishing, it helps meet tight tolerances when paired with compatible Sunnen tooling. As with other K3 stones, NV69 is designed for predictable wear and consistent finish across multiple honing cycles.