auto lock nut lock cage nut nylon insert lock nut SpecificationsWe are muanufactory. Our main ... ,Carbon steel,(Q195,C1035,C1045)Surface: Zinc plated ,Hot dip galvanized,Black,Plain, Yellow zinc.Product Origin,: Haiyan County Zhejiang Province ... size,260X260X140. 20FT FCL:17-24MT.Certification(s), ISO9001:2000. GALVANIZED LOCK NUT