John Evans’ Sons is the international leader in the design and manufacturing of constant force springs, constant force spring assemblies and variable force pusher springs. Custom design, in-house tooling and precision manufacturing, combined with a wide & varied stock spring selection allows us to serve a wide variety of high tech applications from military to medical and from the depths of the seas to aerospace.
An eyelet is a metal, rubber, or plastic ring with flanges are used to strengthen or reinforce holes punched in thin fabrics. It is a smaller counterpart of a grommet that is bigger in size and used for more heavy duty materials...
Metal stamping is a coldworking process that transforms sheets of metal into specific, preset shapes. It uses specialized tooling which involves the stroke of the punch that brings conformational change to the metal sheet...
A metal washer is a small flat piece of metal that has a hole in the center and is used as a spacer, a method for absorbing shock, or distributing the load of a fastener. The hole in the middle of a metal washer allows for a bolt or screw to pass through...
