Startech ,No it seems that way but uses Metric it is all Metric and If it uses SAE it is all SAE at the current time. Now threading and actual screw size is usually always different different between SAE and Metric.
It just some hex sizes [tool sizes] are inter-changeable like
5/16 > 8mm
7/16 > 11mm
1/2 > 13mm
5/8 > 16mm
3/4 > 19mm
7/8 > 22mm
15/16 > 24mm
and 3/8 is smaller than 10mm not the other way around so if the size change then the 3/8 would a loose fit in a 10mm hole.
I mean thanks for that conversion chart I think I got the 3/8 in for that rocker stud from a YouTube video so then I go over to the machine is 10 mm so you know at this point everything's back together and I didn't even need to know that because I bought a brand new cylinder head + it started right up first try which was scary because I figured something would go wrong with like within a couple minutes but it didn't so so at the time before I realize that valve guide just dropped right out of the cylinder head I thought I was replacing parts on that cylinder head so that's why I needed to know like what's going on here this here is 10 mm and the YouTube video was saying 3/8 but that's all a moot point now hopefully with a brand new cylinder head and all the specifications that I used especially the four and the six for intake and exhaust clearance if you know what I mean better get some more ears out of this machine.
Jim
Last edited: