Hard-to-Find Fastener 014973230746 Carriage Bolts, 5/16-18 x 3/4-Inch, 100-Piece Diameter: 5/16-Inch Length: 3/4-Inch Material: Steel Finish: Zinc Head Style: Carriage Diameter: 5/16" Length: 3/4 inches Material: Steel Finish: Zinc Head Style: Carriage