... , CE, BS1139, EN74 2.Name:Lock pin, Washer plate, Wing nut, Base plate, Insert 3.Type:Pressed, forged 4.HDG, painted ... various scaffold accessories, including base plate, screw jack base,wing nut, washer plate, inner joint pin, jack nut, lock pin and steel panel. we ... ,galvanized,hot dipped galvanized, painted scaffold accessories/Base plate/Wing nut/Lock pin/Insert/Hook