Cotter Pins - Cotter pins are used to semi-permanently secure clevis pins or other hardware such as spreaders and diamond wires. 18-8 Stainless Steel.
Cotter Rings - Commonly referred to as 'Ring Dings' cotter rings are used to secure clevis pins or other hardware that is frequently disconnected such as forestay and shroud adjusters. 18-8 Stainless Steel.
Fast Tip: Use 1/2 (13mm) and 5/8 (16mm) OD. cotter rings for 3/16 (5mm) and 1/4 (5mm) diameter clevis pins. Use 3/4 (19mm) OD. cotter rings for 1/4 (6mm) and 5/16 (8mm) diameter clevis pins. OD.= outside diameter.
Hair Pin Style Cotter Pins - Hair pin style cotter pins are used as a quick release means of securing non-critical items such as rudder pins and trailer coupler lock pins. 304 Stainless Steel.
Note: Not for use on standing rigging.