Wire holder

Can someone with a 540 parts cat find the part number for a "three wire clip" for the sparkplug wires that attach on the bottom screw of the valve cover.
Thanks
Sam

The three wire clamp in both Lycoming and Continental parts manuals list a regular adel clamp. I drill the hole to 1/4" and put 2 AN4-960 washers between the clamp and the rocker cover gasket.

clamp

There is a 3 wire clamp, I've used them before, made from stainless steel and a special heat resistant insert. I just can't find my parts cat to retrive the part number since my last move.
Thanks!