ENCO 1"-5 Acme Threaded Rod | C1018 Steel Min Tensil Strength (typ) 64,000 psi, Hardness 126 Hb. Hex Size 1-5/8", Nut Thread Length 0.990". I made these to set screed pipe height, so I have over 30 of them.These have a little more than 14" thread. I also have extra Nuts (New Ones) I would let go for $6 each. I repaired an old Columbian Vise of mine using one of these and it works great. Using them for a clamp project should work as well.