Non Standard Bolts,Hardware 1.ISO,ANSI,JIS,DIN,BS& non-standard ... 8.8,9.8.. Non Standard Bolts,Non Standard Hardware,USA Bolts And Nuts.1.What’s the specification of ... H62,H65,H68...Aluminum is good Aluminum.Meanwhile,we can use other materials accordingto customer's demand .SizeThe Diameter :Generally ... Perfect quality 1.In Carbon Steel,The material are always use C1022 ,The percent of C element is 0.18 ...