dtoeppe85 22 #1 Posted July 23, 2015 What is the correct thread size for the 4 holes in the block around the output shaft on a K91? I am trying to fab up some belt guides using these holes, but can't tell what size they are, due to them being painted over in the past. I've tried both a 5/16-18 and 5/16-24 bolt and both seem to start, but then there is resistance. Share this post Link to post Share on other sites
new2horses 287 #2 Posted July 23, 2015 All that I have seen were 5/16ths" 24. 1 Share this post Link to post Share on other sites
gwest_ca-(File Mod) 10,532 #3 Posted July 23, 2015 It is not very often that you will see fine threads is cast iron or other soft metals.Garry Share this post Link to post Share on other sites
dtoeppe85 22 #4 Posted July 23, 2015 Garry - Are you saying that you think they are 5/16"-18 then? Share this post Link to post Share on other sites
Racinbob 10,393 #5 Posted July 23, 2015 They are 5/16"-24. I wasn't sure so I just now verified it. 1 Share this post Link to post Share on other sites
buckrancher 2,678 #6 Posted July 23, 2015 yes 5/16-24brian 1 Share this post Link to post Share on other sites
