Socket-set-screws (din 916-din 915-din 914- din 913)- hex bolts have hexagonal heads and machine threads for use with a nut or in a tapped hole. Also known as hex cap screws or machine bolts....
Socket-(button)-head-screws- hex bolts have hexagonal heads and machine threads for use with a nut or in a tapped hole. Also known as hex cap screws or machine bolts....