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Tab lock washer.
Tab lock washers are a type of round lock washer that are generally manufactured with tabs or notches that are designed to fit around bolts and nuts or made to lay flat.
The ears are bent up by the user to lock the nut in place.
Split star and tab lock washers are commonly used in airplane manufacturing.
A lock washer is designed to prevent a secured joint that is fastened with a bolt or screw from turning or loosening in response to shock or vibration.
Tab lock washers are available in the following materials and finishes.
Teeth bite into the joint for a tighter grip than split lock washers.
Tab lock washers bend one tab against the side of the mounting surface and the other tab against the flats on a bolt or nut to prevent both the fastener and washer from turning and loosening in high vibration applications such as a motor mount.
They work to lock a part in place and are most often used in applications where there are drastic heat conditions or heavy vibrations.
It can have internal or external teeth for gripping and can be split through one part of the ring.