Re: '29 U-Joint Plug Threads

Posted by Pat Brothers On 2012/9/5 14:00:17

I drilled and tapped two holes, one a 3/8 NF, the other 1/8 NPT. The one original plug fit the NPT hole, therefore the original plugs must have been NPT.

The problem was that the original plug I had was too short to see if there was any taper. It is very difficult on a 1/4" long plug to see if it has 24 or 27 tpi.

Pat