The Makita Lock Nut for 4.5″ and 5″ Grinders is an essential accessory for any professional or DIY enthusiast. Engineered from rugged carbon steel with a durable powder-coated finish, this lock nut securely clamps diamond blades, grinding wheels, cut-off wheels and multi-discs for safe, efficient operation. Its precision left-hand threading and hexagonal head ensure fast installation and removal, while the high-shear strength design stands up to the toughest jobs.

Whether you’re cutting, grinding or polishing, this lock nut delivers reliable performance and long service life on select Makita angle grinders.

Key Features

• Compatible with Makita 4.5″ and 5″ angle grinders
• Secures diamond blades, grinding wheels, cut-off wheels and multi-discs
• Durable carbon steel construction with powder-coated finish
• Hexagonal head for easy tightening and removal
• Left-hand threading locks discs in place under high torque
• High-shear strength design for industrial and heavy-duty use

⚠️ WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically-treated lumber. Your risk from these exposures varies, depending on how often you do this type of work. To reduce your exposure to these chemicals: work in a well ventilated area, and work with approved safety equipment, such as those dust masks that are specially designed to filter out microscopic particles. For more information, visit www.P65Warnings.ca.gov.