M39 - Spring Washer Rectangular Section Type B BS 4464 - Self Colour - Pack of 2

These rectangular section M39 spring washers are manufactured from high quality steel and feature a self colour finish. Type B Spring washers are specifically engineered for applications where there is a need to prevent loosening fasteners due to vibration or torque. Their helical shape allows them to exert a continuous force between the fastener's head and the substrate, maintaining tension and improving the reliability of the joint. These washers are ideal for use with metric threaded fasteners in a wide range of applications, from heavy-duty industrial settings to everyday DIY tasks. They conform to the BS 4464 British Standard specification.