Back Home / Fasteners / Pins / HITCH PIN – ZINC .177 DIAMETER, 3-1/4 LENGTH HITCH PIN – ZINC .177 DIAMETER, 3-1/4 LENGTH SKU: HP206 Categories: Fasteners, Pins Also known as bridge pins or hairpin cotter pins, these are the most common form of hitch pin retention. Steel, zinc plated. Used in conjunction with clevis pins and also trailer receivers. Wire diameter 0.177. Length of 3-1/4 inches. Case Quantity: 25 Log In For Pricing