Nuts Steel & Stainless including - Long Cylinder Head - Exhaust - Flywheel Nuts - Brass Inner Tube Bushes - Crankshaft - Brass - Kick-Start - Acorn - Castle - Pike Nuts. Plain and Stainless Steel Nuts for a multitude of uses in the motorcycle Industry. The Hexagon full nut is a general purpose nut, also known as hex nut. It is typically used with a bolt or machine screw.