Tap and die for c-clamp style thread

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Im just wondering what the course style threads used on most larger c-clamps is called? Can you get taps and dies for it? I figure the bolt side is probably cut on a lathe but how would one go about tapping a hole for it?
Reply:Originally Posted by ztecIm just wondering what the course style threads used on most larger c-clamps is called? Can you get taps and dies for it? I figure the bolt side is probably cut on a lathe but how would one go about tapping a hole for it?
Reply:Most of my  c-clamps have acme threads.  Are making clamps?  I would guess that since most clamps are cast product, then the thread are formed when the clamp formed then chased with a tap.You can buy the acme all-thread rod and nuts at a screw and bolt supply store.
Reply:Originally Posted by ztecIm just wondering what the course style threads used on most larger c-clamps is called? ...Can you get taps and dies for it?...
Reply:I have  seen a few ACME coupling nuts on rare occassion at hardware stores. I suppose a guy could incorperate an acme nut welded into place on some projects where welding could be done and appearance wasn't an issue.
Reply:Just one idea. Didn't bother to check prices.  http://www.newmantools.com/taps/acmetap.htm
Reply:Hmm, I always knew the threads were different but didn't know the name. Very interesting, learn something every day on here~! Whoooop! John -  fabricator extraordinaire, car nut!-  bleeding Miller blue! http://www.weldfabzone.com
Reply:Originally Posted by denrep Ya aint lived (or cussed) 'till ya try cut acme thread!
Reply:I'm not sure what you want to do using the acme threads but what I have done is to buy acme threaded rod and acme nuts from Enco  www.use-enco.com  and weld the nuts into what I am building. The stuff is usually on sale and priced very reasonably.JimCut an MGB and widened 11" C4 Corvette suspension and LT1 Chevrolet power & 6 spd. Pictures here:Part 1http://forum.britishv8.org/read.php?13,7581Part 2http://forum.britishv8.org/read.php?13,22422