Wire lock pins are a clevis pin with an attached wire loop that is pulled over the end of the pin. The loop at the end of the bent wire slides over the post for simple securing and removal. Pins are round in shape. Parts are similar to a clevis pin but with a wire loop attached to the end.
Hillman 2-in Round Wire Lock Pin 882693
Everbilt 1/4 in. x 3 in. Zinc-Plated Cotterless Hitch Pin 815588 - The Home Depot
Pro Shop - Fasteners - Specialty Fasteners & Fastener Kits
Hillman Silver Screws Shelf Bracket Screws Kit at
Hillman 0.5-in Silver Cotter Pin/Clip (54-Pack) at
Hillman 1.25-in Silver Cotter Pin/Clip (15-Pack) at
Detent & Hitch Pins, Fastening Pins, Fasteners & Hardware, Business & Industrial - PicClick
Pro Shop - Hardware
Hillman 2-in Silver Cotter Pin/Clip (8-Pack) at
Everbilt 1/4 in. x 3 in. Zinc-Plated Cotterless Hitch Pin 815588 - The Home Depot