Hillman 5/16 in. D Yellow Dichromate Steel Split Lock Washer 100 pk

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. *

• Commonly used in applications using a bolt or a screw where two pieces are being joined together
• Split ends grip the material surface to prevent loosening during vibration
• Hardened with a yellow dichromate finish for corrosion resistance