1.ISO9000, CE, BS1139, EN74 2.Name:Lock pin, Washer plate, Wing nut, Base plate, Insert 3.Type:Pressed, ... plate, screw jack base,wing nut, washer plate, inner joint pin, jack nut, lock pin and steel panel. we can design ... system...Material: Q235,Q345Size: CustomizedSurface: Self-colored,galvanized,hot dipped galvanized, painted scaffold accessories/Base plate/Wing nut/Lock pin/Insert/Hook