The resilient spring double-locking action of these Regular Locknuts enables a lightweight vibration-proof locking action in a low-profile size. Designed to be used with or without a standard nut, they are ideal for applications where frequent load changes would tend to loosen conventional nuts.
These lock nuts have the major advantage of not requiring a torque wrench, simply turn the nut to finger-tight and then tighten 1/3 to ½ a turn. After proper tightening, the hex faces become slightly concave, making visual examination a reliable inspection method. This can give a considerable saving on in-place costs compared to other locking nut systems. Manufactured to meet the specification of DIN7967.
Material - Austempered Carbon Steel.