Hillman 300321 Split Lock Washer 5/8", 25-Pack BRAND NEW AND COMPLETE! THE BOX WAS OPENED AND INSPECTED. This Hillman 300321 Split Lock Washer is a reliable and durable hardware washer made of high-quality steel material. It measures 2.00 inches in height, 3.00 inches in length and width, and weighs 0.600 pounds. The washer is designed for use in fasteners and hardware, and it comes in a 25-pack per box unit quantity. The Hillman Group RSC is the manufacturer of this washer, and it has a model number of 300321. The washer is suitable for use in a variety of applications, and it has a Prop65_fl of N. This item is categorized under Hardware Washers, Fasteners Hardware, and Business Industrial. 5/8", Grade 8 zinc plated steel with yellow zinc dichromate finish. Split lock washer. 25 Pack 5/8" Grade 8 zinc plated steel with yellow zinc dichromate finish Split lock washer. Engineered to provide more uniform load distribution, split lock washers are great for any indoor/outdoor project. Ideal for situations where potential loosening from corrosion or vibration is a concern, split lock washers are used to prevent nuts and bolts from coming loose. These grade 8 fasteners contain split ends that help "lock" into the mating material, thus providing a locking feature when tightened beneath a nut. The yellow dichromate zinc-plating provides moderate corrosion resistance. Use with treated lumber in applications with like nuts and bolts of similar diameter. Split lock washers effectively prevent nuts and bolts from coming loose, ensuring the integrity of your indoor or outdoor projects. Engineered for more uniform load distribution, these washers offer stability and security, particularly in situations prone to vibration or corrosion. With yellow dichromate zinc-plating, these grade 8 fasteners provide moderate corrosion resistance, enhancing their durability in various environments. Easy to install for quick and efficient use Reliable Quality: Suitable for both professional and DIY projects, offering long-lasting performance.