Headless Pins are made to order with holes or grooves. This versatile fastener can be made from material to suit your application. Headless Pins are usually made in low carbon steel. Higher strength carbon and alloy steel and corrosion resistant Stainless Steel (300 Series) are available. Also known as Hinge Pins and Headless Hinge Pins. Some Cotter Pins that we have available for use with Headless Pins include Bow-Tie Locking Cotters, Rue-Ring Locking Cotters, Circle Cotters and Hair Pin Cotters.