5/16-18 x 1/2 Slotted Fillister Head Machine Screw Fully Threaded Zinc NJY and the 2 1/2-inch length

and the 2 1/2-inch length provides ample grip for secure fastening

The screw also has a hex head

It is a fully threaded screw with a flat head and a Phillips drive

They feature a combination slot and Phillips drive

5/16-18 x 1/2 Slotted Fillister Head Machine Screw Fully Threaded Zinc NJY and the 2 1/2-inch lengthThe 5 16 18 x 1 2 Slotted Fillister Head Machine Screw Fully Threaded Zinc is a type of screw that is used in a variety of applications. It is made of zinc plated steel and has a slotted fillister head. The screw is fully threaded and has a length of 1 2 inch. It is designed to be used in applications where a strong and durable screw is needed.