1/2 Inch Hex Nut Knob
thingiverse
I prefer to get 1/2-inch threaded rods because they're more readily available than M12 rods, so I adapted the nut knob to fit a 1/2-inch hole and shortened it to better secure a standard 1/2-inch hex nut.\r\n\r\nThe hex nut I used is available at Home Depot;\r\nhttps://www.homedepot.com/p/Everbilt-1-2-in-Zinc-Plated-Coarse-Threaded-Hex-Nut-804716/204647892
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