Hillman 300321 Split Lock Washer 5/8" - 25-Pack/Box BRAND NEW AND COMPLETE! THE BOX WAS OPENED AND INSPECTED. The Hillman 300321 Split Lock Washer is designed to ensure secure fastening in various indoor and outdoor projects. Made from Grade 8 zinc-plated steel with a yellow zinc dichromate finish, these washers provide excellent corrosion resistance and are ideal for use in environments where vibration or corrosion could cause fasteners to loosen. The split lock washer design helps lock nuts and bolts in place, distributing the load more uniformly and preventing loosening due to vibration or torque. Key Features Grade 8 Zinc Plated Steel: Made from high-strength Grade 8 steel, ensuring durability and reliability for demanding fastening applications. Yellow Zinc Dichromate Finish: Provides moderate corrosion resistance, making these washers suitable for outdoor and industrial use. Split Lock Design: Prevents nuts and bolts from loosening, particularly in vibration-prone applications, providing a secure fit. Easy Installation: Simple to install, these washers can be quickly used with the appropriate bolts and nuts for added security. 5/8" Size: Ideal for use with a wide range of bolts and screws of similar diameter, providing versatility for many projects. Convenient 25-Pack: Includes 25 washers per pack, offering ample quantity for multiple projects or repairs. Specifications Size: 5/8" Material: Grade 8 Steel Finish: Yellow Zinc Dichromate Type: Split Lock Washer Quantity: 25-Pack Weight: 0.600 lbs Manufacturer Part No: 300321 The Hillman 300321 Split Lock Washer is perfect for securing nuts and bolts in a variety of mechanical, construction, and home improvement projects. It?s especially effective in situations where corrosion or vibration may cause fasteners to loosen. Whether you're working with wood, metal, or other materials, these washers ensure that your connections remain tight and secure, improving the safety and integrity of your projects. Ideal for both professional contractors and DIY enthusiasts, they offer a reliable solution for long-lasting performance.