My bike rack uses a pair of these. After many years the spring loaded ball on one of them popped out so it's dead. 5/16 is a less common diameter so I was lucky to find this replacement, albeit longer than I needed. Works well.
π οΈ Hilitchi Beveled Insertion Straight Furniture Pins: Effortless Assembly and Sturdy Support
9 Review
Nokian Tires Nordman 8 195/55 R16 91T winter
24 Review
π§ Neiko 50412A Storage Pieces Assortment
8 Review
π© Copper Tacks with Rubber Fasteners by BronaGrand
π Carriage Prime Line Products GD52103
6 Review
π© Hard-to-Find Quick Fastener 014973253790 - 4 Piece Set
7 Review
Highly π Sought-After Fastener: Connector 014973445713
πͺ Strong and Versatile: National Hardware N222 406 Square Bolts for Secure Fastening