GB97 standard flat washers are made of high-strength raw materials reaching HV140 hardness grade with color zinc plated surface treatment for excellent rust resistance and corrosion protection. Featured with enlarged and thickened structural design, these galvanized gaskets enhance bearing capacity and wear resistance for stable stress dispersion during fastening use. Manufactured in strict accordance with GB97 national standard with precise dimensional processing, ensuring perfect fitting and reliable assembly performance. Premium surface finishing effectively extends service life and adapts to various harsh working environments for long-term industrial application. Widely applied in mechanical assembly, engineering fastening, hardware installation and industrial equipment connection scenarios. Stable factory quality supply, ideal for global hardware purchasers and manufacturing enterprises.