Product Details
Combination internal/external tooth lock washers are designed to provide dual benefits for fastening applications. The internal teeth effectively lock into bolt heads or nuts, preventing backoff rotation, and are particularly effective with smaller head screws, such as fillister heads. Meanwhile, the external teeth enhance the security of bolt heads or nuts by increasing the bearing area and offering greater hardness, allowing for the rotation of the nut or bolt without causing distortion of the bearing surface. These washers are available in various diameters and are constructed to meet industry standards for performance and reliability.








