TK 22 float bowl bolt size?

I've had my GPz550 for about 2 weeks, in that time I've had the bowls off the carbs several times.
I want to put allen head bolts in the bowl instead of phillips or jis.

Anybody know what size they are?
I'm going to stop by a hobby shop and try to pick some up tonight and can't get to my bike.

M4? M3? And how long? Thanks!

Take one off and go to the hardware store.
Steve

4x16

Thank you kind sir!

I like to run a tap through the holes before using long allens. Some of the holes seem to not have been threaded entirely all the way.

Also, I use a tiny bit of antiseize on the gaskets (and screws) and they come off like new everytime. I've used the same gaskets through dozens of rejets over 20 years.

And, of course, stainless gets you extra style points.

I ordered 12 gaskets just to have on hand, but I will try the antiseize, better than tearing a gasket and having it stick to the carb body on #2 or #3.
Never guessed I'd be in there that often but between tracking down my leak and rejetting I'm wearing out the stock hardware.

If you coat the gaskets with a thin coat of grease you can reuse them. I haven't bought them for my carbs in 20 years.
Steve

I have used the grease trick on several case gaskets, problem is I've always sold the bikes before they had to come back apart so I have no idea if it worked or not, ha!