[depalma]

Hi!
Can anyone tell me the thread size on the bottom hole of a 1947 45" flatty gas tank.

The hole where the fuel shut of valve mounts.

Thanks in advance!

 

[raynoslo]

If all else fails, get some thread pitch gauges and measure it. Mine came in a tap and die set.

 

[Limey UL]

3/4 - 18 tpi. It's a special thread but taps and dies are available

 

[depalma]

Ok, thanks!