About Jiaxing Sini Fastener Co., Ltd.
Jiaxing Sini Fastener Co., Ltd. is a fastener manufacturer with production facilities in Haiyan, Zhejiang, and Lianyungang, Jiangsu. Founded in 2004 according to its own website, the company produces bolts, screws, nuts, washers, threaded rods and stamped parts for commercial construction, machinery, automotive and industrial maintenance customers, with more than 60,000 tonnes of fasteners and hardware products leaving its facilities each year.
Its core range is carbon steel hex bolts to ASME B18.2.1 and DIN 933/931, in grades 4.8 and 8.8 and the American equivalents A307A and GR2/GR5/GR8, with metric and inch threads from M5 to M52. The offer is completed by heavy hex and carriage bolts, matching nuts and washers, and finishes from black oxide and zinc to hot-dip galvanizing, plus custom-engineered production from customer drawings or samples.
Sini states ISO 9001 certification and an in-house laboratory with an optical emission spectrometer, tensile testing machines, hardness testers, video measuring and a salt spray chamber to verify composition, strength and coatings. Its main markets are North America, South America and Europe, served with weekday inquiry responses within twelve hours and inspection documentation agreed for each order.
Its core range is carbon steel hex bolts to ASME B18.2.1 and DIN 933/931, in grades 4.8 and 8.8 and the American equivalents A307A and GR2/GR5/GR8, with metric and inch threads from M5 to M52. The offer is completed by heavy hex and carriage bolts, matching nuts and washers, and finishes from black oxide and zinc to hot-dip galvanizing, plus custom-engineered production from customer drawings or samples.
Sini states ISO 9001 certification and an in-house laboratory with an optical emission spectrometer, tensile testing machines, hardness testers, video measuring and a salt spray chamber to verify composition, strength and coatings. Its main markets are North America, South America and Europe, served with weekday inquiry responses within twelve hours and inspection documentation agreed for each order.