... .Grade:4.8 ,6.8,8.8,9.8.. Non Standard Bolts,Non Standard Hardware,USA Bolts And Nuts.1.What’s the specification ... head,Countersunk head,Bugle head,Oval head,Hex flange head,Round head,Ball head,Button head...Socket typesPhillip type,Pozi type ... and other testing report .Good service We can manufacture nonstandard parts according to your drawings,samples,detailed descriptions(we can provide ...