To make these, I bought 5/6″-18 bolts, nuts and washers. In the photos, there are a mix of nylon lock nut and thinner-than-normal nuts I’d bought from Lowes. There was a name for those thinner nuts, but I no longer recall what that is. There is a mix because did not want to use lock washers, hence the nylon lock nut.
I chose the 5/16″ bolt because the heads and nuts did not require any grinding to fit inside normal 5/8″ lighting hardware. One could just as easily use 3/8″-16 hardware and make ends onto which 3/8″-16 threaded tripod accessories could be attached but that bolt head and nut size requires grinding the points off. The larger size hardware would fit the lightning accessories better and would certainly carry a larger load, but for my purposes (relatively light duty) the 5/16″ hardware will suffice.
The total cost of making spigots this way is well under $1 each, considerably less than the real thing.
Well, enough typing, on to the photos…
Here are three showing one such spigot I made. The nut spacing was adjusted by placing it near a “real” spigot. In actuality, though, just spacing is not all that critial and a solid column of nuts would work as well.