WAVE PLATE HEAD SCREW 1.ISO,ANSI,JIS,DIN,BS& non- ... 3.Grade:4.8 ,6.8,8.8,9.8........ WAVE PLATE HEAD SCREW,DOUBLE HEAD SCREW,KNURLED HEAD SCREW A ... . for a 20 GP container :22.6T-25.5Tadditioal processes Washer assembly,Heat treatment,Baking hydrogen,Anti-slipping patch can be ... with more than 20 years experiences in screw,bolt,nut,washer,rivet, stud, pin,wrench and so on .2. Our company ...