1/2" diameter & larger Grade 5 bolts are becoming obsolete, in future these will only be available in Grade 8.
Thread = 12 TPI (Thread per Inch)
UNC (Unified National Coarse Thread)
Hexagon head Across the Flats ( AF ) = 13/16""
Medium High Tensile Grade 5
Zincplated Finish
Fully Threaded
