This Speed Bolt, some call them "Quickie Bolts", is a 7/8" super course thread bolt with a 1 7/16" Nut welded on one end and a 1 7/16" loose nut on the other. These are designed to pull 2 beams (connecting plates) together quickly to make a tight connection. Allowing a standard bolt to be inserted into connection point. Extra course threads for speedy tightening. Not designed to replace a standard bolt.