Small Parts14NRBZ 1/4"-20 Serrated Flange Hex Lock Nuts Case Hardened HR15N 78/90 Black Zinc and Bake (Pack of 50)

I needed these for some clamp holders I made. They fit the bill: 1/4-20, black, flanged.I couldn't ask for anything more :) they seem solid enough. The black did wear off in areas where I was not as gentle with the wrench, but that's on me, not the nut :)

For those who would need to know (since it's not listed) the hex size on these is 7/16". I was looking for a standard flange with reduced size hex, but I can't find any in SAE, only in metric, but I can't switch from SAE to metric now, since our product uses the SAE sizing. Nothing bad about these, just wanted y'all to know. The base of the flange measures 9/16" and the hex is 7/16"

They look nice and they lock down nice. And the price is way better than the hardware store.

As expected

Not much else to say, it’s not 1/4in. Pretty scummy.

Good item should work well for what I need.

Worked well for what I needed it for