Install a motherboard into a computer case with #6-32 threaded mounts and M3 screws This pack of 5 Metal Jack Screw Standoffs are great to have on hand for new system builds, repairs or upgrades - the ideal solution for mounting any motherboard to your pre-tapped PC chassis. The StarTech.com Advantage - M3 tapped standoff with #6-32 threaded screw for easy conversion from a #6-32 tapped motherboard tray