5/16-18 x 1-1/4 Grade 8 Coarse Hex Cap Screws

These 5/16-18 x 1-1/4 Grade 8 Coarse Hex Cap Screws are crafted from high-strength Grade 8 steel, ensuring reliable performance and durability in demanding applications. Featuring a yellow zinc finish, they offer moderate corrosion resistance to help extend their service life. The hex head design includes an integrated washer for easy installation and removal using standard wrenches or sockets, while the precise threading ensures smooth engagement with nuts for maximum holding power.

Ideal for use in automotive, industrial, and heavy machinery settings, these hex cap screws provide secure fastening solutions where strength and reliability are critical. The clear head stamping allows for quick identification of the screw’s class and grade even after installation, making them a practical choice for professionals and DIY enthusiasts alike. Whether assembling equipment or performing repairs, these bolts deliver consistent performance to keep components firmly connected under stress.