6-20 x 5/8 Unslotted Indented Hex Washer Thread Cutting Screw Type 25 Fully Threaded Zinc ABW They have a flat head

They have a flat head with a Phillips drive and an undercut design that helps to prevent the screw from loosening

This makes it easier to install and remove

while the partially threaded shank allows for precise adjustments

The bolt has a hex head that can be tightened with a wrench or socket

6-20 x 5/8 Unslotted Indented Hex Washer Thread Cutting Screw Type 25 Fully Threaded Zinc ABW They have a flat head6 20 x 5 8 Unslotted Indented Hex Washer Thread Cutting Screw Type 25 Fully Threaded Zinc: #6 20 screw size, 5 8" length Unslotted hex washer head for secure tightening with a wrench Indented washer provides a larger bearing surface and prevents loosening Thread cutting design creates its own threads in the material, providing a strong hold Type 25 thread style for use in thicker materials Fully threaded for maximum holding power Zinc plating for