Standard 3/16” hex jack screws are primarily used to secure D-type cable connectors in computers and other electronic equipment. RAF Electronic Hardware jack screws are available in steel with zinc plate per ASTM-B-633 (yellow chromate) with thread lengths of 3/16” to 3/4”. They come as a complete set including two flat washers, one lock washer, and one nut. Hex jack screws meet all the important industry specifications and can be customized for customer's applications.