Rule R7.c allows for "Any commercially available #4, #6, #8, M2, M2.5, M3 or M4 screw up to 2" long (nominal), and
any commercially available nut and/or washer to fit these screws."
I would like to ascertain that nuts known as cap nuts (sometimes called acorn nuts) can be used under this rule.
McMaster describes them thusly: "Also known as acorn nuts, they have a smooth rounded head that covers and protects threads while providing a finished appearance."
A link to an example with a picture can be found here: https://www.mcmaster.com/#91855a440/=1e8raxb
Thanks
Answered by Game Design Committee
The rest of <R7c> states the following:
The intent of the rule is to allow teams to purchase their own commodity hardware without introducing additional functionality not found in standard VEX equipment. It is up to inspectors to determine whether the non-VEX hardware has introduced additional functionality or not.
If used simply to protect threads and provide a finished appearance, these nuts would be legal. However, if used for another purpose (such as a form of ball caster or to interact with a sensor in a way that a standard nut would not), then that would be considered "introducing additional functionality" and would not be legal.
