David, I think USS is what in the unified system is called UNC. Likewise, SAE became UNF in the unified system. I don't know if there are any other differences in thread profiles etc. but they seem to be compatible in my experience.
Cheers, Kurt On Mon, Apr 2, 2018 at 9:33 PM, David Berndt <[email protected]> wrote: > What? What exactly is the pitch/sizing on a USS bolt? Google doesn't > really return much for a USS thread chart... UNS? 7/16-18? TSC was formed > in 1938, perhaps you got their last piece of original stock? > > > On Mon, 02 Apr 2018 19:35:27 -0400, Gene Heskett <[email protected]> > wrote: > > I rigged the 5C to ER-40 to the mills table, then found I needed a draw >> bolt about 4" long to keep the R8 from rotating in the ER40 collet. So >> I saddled up and ran out to TSC, where I found the 7/16 bolts they had >> were only grade 5. So I got one and some washers to adjust the length >> with, came back and found the bolt was USS while the butt end of the R8 >> was SAE. So I'll have to round up some 1/2" A2 and put it all back in >> the lathe to apply a g76 and make some SAE threads. >> >> I also found I'll need a better way to clamp it to the table, probably >> by making a big v-block and a thick steel bar to clamp it into the V. >> >> Some days I swear its not worth gnawing thru the straps to get up and pee >> in the mornings. :( >> > > ------------------------------------------------------------ > ------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
