... :DIN,GB,BSW Finish :plain,black,zinc SepecificationLong Hex nut (ISO9001 Approve) Materail :carbon steelSize of bolt :M3~M64Thread :half ... threadCertificate :ISO9001:2008Surface :plain,black,zincHandan HaoSheng Fastener Co.,LTD. Locate the ... transportation. We have been to many years in the hardware line. We are produce kinds of bolt and nut, for ...