Derlin tip screws

Hello,

I cannot remember who sells this so throwing it out here. I have a nice set of 6" id rings custom made, but want to replace the 3 screws per ring with ones that are derlin tipped like the Losmandy version. I thought there was a supplier selling these but I cannot remember who. Any ideas?

TIA
Keith

Maybe McMaster-Carr? (www.mcmaster.com). Scopestuff (www.scopestuff.com) is also a good place to find hard-to-find things of that nature, but it will cost you.
--
Mike