... SpecificationsWe are muanufactory. Our main products are hex nuts, flange nuts, lock nuts, high nuts, thin nuts, square nuts.product :HEX NUT, FLANGE NUT, SQUARE NUT, HIGH ... NUT,LOCK NUTStandard,DIN ANSI BSSize:M3-M48, 5/ ... 260X260X140. 20FT FCL:17-24MT.Certification(s), ISO9001:2000. GALVANIZED LOCK NUT