I'm using CAT bolts on my motor plate minimum tensile strength of 150,000 psi, not too pricey and Made in USA ARP stuff is 170,000 psi and nice looking but expensive
That's a grade 8 bolt manufactured by Lake Erie ( LE ) - a top quality fastener manufacturer in the US. Cat just had Lake Erie put their logo on them. All LE fasteners have rolled threads verses threads cut in to the bar stock. If the bolt has 6 hash marks on it ( denoting grade 8 )along with the LE trade mark, you have top quality stuff.
