5/16-18 thread inverted hex (Allen) set screws good for use as carburetor studs. install with Allen wrench with Loctite and let them set up. I tested these on a stock flathead intake once carb is installed you can't access the hex. this is why I suggest using some Loctite on the initial install. not critical but can be helpful. You don't want to know what "big carb" charges for their kits you can get 3 kits here for 3 bucks more! You are welcome.
Studs are black oxide finish the nuts & lock washers are stainless. kit includes 3 studs, 3 nuts, 3 lock washers enough for one carb,