RS PRO Bright Zinc Plated Steel Internal Tooth Shakeproof Washer

RS PRO BZP Spring Steel Lock Washer
From the trusted RS PRO brand, this external tooth lock washer is ideal for added security in fixings and fastenings. They function in the same way as a standard washer, by distributing the load of a bolt against a surface material, but have a locking action that prevents turning of the fastener, meaning there is less chance of the fixing loosening over time or under repeated stress. As such they are commonly used wherever vibration is a factor.
There are various sizes available;
• 530-129 is an M8 internal tooth shakeproof washer
Applications
Internal tooth lock washers are a type of washer specifically designed to prevent loosening in smaller fastener heads (as opposed to external tooth types that are better for smaller fastener heads.) They are designed to fortify fastenings against dynamic loads, and as such are used in machinery or materials that are often subjected to vibration or continuous movement. They might typically be used in;
Domestic appliances such as washers and dryers
Industrial machinery
Automotive industries