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:3/8"x2-3/4" (D*L)Number of Teeth: 16Rod Length: 70mm / 2.75''Hex Width:14.5mm / 0.57"Hex Thickness: 6.5mm / 0.25"Package Content: 5 x Hex Head Bolts