... 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, 5/32- 2"Material ... ,260X260X140. 20FT FCL:17-24MT.Certification(s), ISO9001:2000. GALVANIZED LOCK NUT