Carriage Bolts Galvanized 5/16″ -18 Grade 2 This bolt is used to fasten metal or wood-Excellent choice for outdoor applications. Carriage heads large and domed shape Req
Sigma UltraGrip T-Nut - 5/16"-18 Precision T-Nuts designed for Machine Insertion Ultragrip T-Nut Features Insert T-Nuts fast and accurately with T-Nut drive machines