Cotter Pins Manufacturer and Supplier in India, also known as Split Pins. It is a simple fastener that is used to secure a bolt or any other rod shape fastener. DIC Fasteners offers a wide selection of cotter pins in a wide range of materials, finishes, and sizes as well as a variety of types including circle, clinch, bow tie, hammerlock, humped, ring, T-head, and self-locking cotter pins in custom as well as non-custom sizes, depending upon the applications.