Common Hex Socket Head Screws with Step ISO 7379 Shoulder Bolt

Hangzhou Jiangxin Industry Co., Ltd was established in 2004. It is a national high-tech enterprise and a scientific and technological enterprise in Zhejiang Province. It is a professional fastener manufacturer integrating production, research and development, and sales. It has the world's advanced fastener production Equipment, using advanced ERP system for management.The company has passed the ISO9001 international quality management system certification, and has distribution outlets and logistics distribution centers in East China. The company specializes in the production and operation of German standards (DIN), American standards (ANSI, ASME), international standards (ISO), national standards (GB), Japanese standard (JIS), British standard (BSW) and other standard parts and non-standard parts are high-strength bolts and advanced expansion bolts. The materials involve various carbon steel and stainless steel 304 and 316. Products are widely used in high-speed rail, automobiles, ships, machinery, molds, electronics and construction and other fields. And because of its good performance, fast installation, beautiful appearance, compatible and stable and many other advantages, it is favored by Chinese and foreign merchants.Business varieties: bolts (outer hexagonal bolts, inner hexagonal bolts, carriage bolts, flange bolts, etc.), screws (machine screws, drilling screws, set screws, 12.9-grade plug screws, hexagonal wood screws, self-tapping screws ), nuts (hexagonal nuts, K caps, nylon, stamped metal self-locking nuts, hexagonal flange nuts, cap nuts, rivet nut series, etc.), others (semi-hollow rivets, step rivets and various non-standard tightening customization of firmware)./* March 10, 2023 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1