... 3.Grade:4.8 ,6.8,8.8... Rivet,blind rivet,rivet nut 1.What’s the specification of our ... screw,bolt,nut,washer,rivet, stud, pin,wrench and so on .2.Our company had good reputation with ... strict quality control from producing to delivery.Our company had strong technology support,a special quality control ... ,our price is a little expensive than other company,but is reasonable for products,it will spend ...