China Wholesale Heavy Hex Bolt Grade 10.9 12.9 with Fitting Nuts M16 M18 M20 M24 M30 M36 M48 M56 for Different Model Construction Machine

Quanzhou Zhongkai Machinery is proud to present our extensive range of wholesale heavy hex bolts, grades 10.9 and 12.9, designed specifically for the construction machinery industry. Our high-quality fasteners, available in sizes M16, M18, M20, M24, M30, M36, M48, and M56, ensure exceptional strength and durability for various applications. With a commitment to excellence, we manufacture our products using premium materials, including high-grade 40Cr steel, to deliver robust solutions that meet the demanding requirements of construction professionals globally. Our heavy hex bolts are ideal for critical applications in excavators and other heavy machinery, ensuring reliability in every project, In addition to our heavy hex bolts, we also provide an impressive selection of Grade 12.9 hex nuts and bolts tailored for specific models, such as the PC300-5 excavator. Our spare parts, including track bolts and nuts like the 9M7444, are engineered to perfection, guaranteeing compatibility and performance in every assembly. At Quanzhou Zhongkai Machinery, we are dedicated to providing our customers with exceptional products, including premium 40Cr steel hex nuts and bolts for excavators in standard sizes like M12, M14, M16, M18, M20, M24, M21, and M23, alongside our black blade track chain bolts and nuts. Partner with us for all your construction machinery fastener needs, and experience the assurance of quality and performance that sets us apart in the global market