M4 Washer remix for ender-3-and-ender3-pro-x-y-belt-tensioners

Made a washer that can take a m4 nut so it does not slip in the inside. its a tight fit but it works well! See below for original tensioner by @Crosslink. https://www.printables.com/model/152451-ender-3-and-ender3-pro-x-y-belt-tensioners