threads

I am tapping into my toilet's water supply line to provide water to a bidet toilet-seat. The 1/2 in. fittings supplied with the bidet would work on the fittings inside my toilet... but I can't reach them. The toilet is installed too close to the wall. But the valve at the wall is accessible...

Hello, web searches are failing me, I must be looking for the wrong terms as usually fittings dimensions are easily accessible. I am trying to figure out where to find the specifications for 1.5inch tube fittings (like seen in P-traps). Specifically the wall thickness requirements and thread...