Rivets are available separately. See typically stock-no. < 303-5403') 303-5403/. Snap Rivet Circuit Board Support. Circuit board supports designed to mount on a chassis and be secured with a plastic rivet. The rivet and support can be push-fitted together quickly and easily. Rivet is flush fitting and gives minimal protrusion under the chassis. Material: Nylon 66 Colour: Natural PCB Thickness 1.6mm Fixing hole 4mm