Grade 5 hex king bolt Surface :Zn yellow Machined and turned ... experience in fastener field 1,Name: Grade 5 hex king bolt;Hex king bolt;Grade 5 bolt2,For the similar bolt,what ... ,9.8,10.9,12.9,etcCarbon steelGr.B,Gr.C,Gr.D,Gr.36,Gr.58,1010,1015,1016,1020 ... industry is machined hardware fastener ,especially the cutting/turning parts. Grade 5 hex king bolt