Steeler Posted June 1, 2010 Share Posted June 1, 2010 I got these 3/4" threaded rods from my local scrap metal yard. The thread roots are unusually round and the count is 4.5 TPI. The nuts are made for this thread shape and spin easily on the rods. I wonder at the origin of these parts and what they were used for. Could I use them to build a light weight fly press or? Quote Link to comment Share on other sites More sharing options...
NeatGuy Posted June 2, 2010 Share Posted June 2, 2010 I got these 3/4" threaded rods from my local scrap metal yard. The thread roots are unusually round and the count is 4.5 TPI. The nuts are made for this thread shape and spin easily on the rods. I wonder at the origin of these parts and what they were used for. Could I use them to build a light weight fly press or? Those are called dywidag bolts and are used for high tensile concrete anchor applications. They are made of cr-mo similar to astm 4140 steel. Quote Link to comment Share on other sites More sharing options...
Steeler Posted June 2, 2010 Author Share Posted June 2, 2010 Those are called dywidag bolts and are used for high tensile concrete anchor applications. They are made of cr-mo similar to astm 4140 steel. Thanks NeatGuy. I Googled dywidag and found lots of info about this anchoring system that I was previously unaware of. Dunno what I will use them for but they are cool as heck. Quote Link to comment Share on other sites More sharing options...
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