Description:1.Designed with hex head and carbon steel material.2.Fixing component, industrial and construction fasteners.3.Used widely in the home and office appliance, communication equipment, ship assembly and other machinery industry.Specification:Product Name: Hex Head BoltsMaterial: Carbon SteelPerformance Grade: 5 UNCThread Size:5/16" x 2" (D*L)Number of Teeth: 18Rod Length: 51mm / 2"Hex Width: 12.5mm / 0.5"Hex Thickness:5.5mm / 0.22"Package Content: 10 x Hex Head Bolts