5/16-18 x 2″ Grade 5 Hex Cap Screw COARSE – ZINC (PT)

Hex cap screws, their hexagon head is designed to be driven using a wrench or socket. These fasteners are also known as hex cap bolts, hex bolts, tap bolts, or hex cap screws. Grade 5 Zinc-plated steel hex cap screws offer enhanced corrosion resistance. You can identify Grade 5 Zinc hex cap screws by the three hash marks found on the top of the bolt’s head. Grade 5 steel has a tensile strength between 105,000 and 120,000 psi.