Tool-Free Quick Installation & Removal: This 5/8"-11 angle grinder flange nut allows for fast and wrench-free tightening and loosening. Its quick-release design facilitates rapid accessory changes, significantly reducing downtime and enhancing workflow efficiency in grinding or cutting tasks. Universal Compatibility: Designed to fit most 4-1/2 inch and 5-inch angle grinders with a standard 5/8"-11 spindle thread, this grinder arbor nut is a versatile replacement, ensuring wide applicability across various brands and models. Robust Carbon Steel Build: Made from durable carbon steel, this angle grinder lock nut withstands wear, abrasion, and deformation. It's built for rigorous grinding, cutting, and wire brushing tasks, offering reliable performance and longevity as a sturdy replacement nut. Workflow Efficiency Enhancement: With its rapid-change capability, this 5/8"-11 thread grinding nut eliminates the need for a wrench, significantly speeding up project completion and boosting productivity in professional and DIY settings. Versatile Accessory Compatibility: This angle grinder flange nut seamlessly integrates with a variety of accessories, including cup brushes, cutting discs, grinding wheels, and sanding discs. It's essential for diverse applications such as rust removal, cutting, and surface preparation. Description/Features: Experience unmatched security and stability with our precision-engineered angle grinder spindle nut. Designed with precision-cut threads and a robust flange, this nut ensures a tight and secure fit on your angle grinder's arbor, preventing accessory slippage even during high-speed operations. Ideal for both professional contractors and home DIY enthusiasts, this 5/8"-11 angle grinder nut combines convenience, compatibility, and rugged durability. It's an indispensable accessory that enhances safety and efficiency in your toolkit. Specifications: Material: Alloy Steel Color: Black Size: Internal Diameter: 5/8"-11 Outer Diameter: 1.91" Height