Black Zinc and Black Oxide DIN 934 Hex Nuts, auto parts, custom vehicle parts

Our Black Zinc and Black Oxide DIN 934 Hex Nuts provide a reliable and versatile fastening solution, featuring aesthetic appeal and enhanced corrosion protection for a wide range of applications.

Key Advantages for Your Applications:

• Globally Recognized DIN 934 Standard: Ensures universal compatibility with corresponding bolts and screws, facilitating easy integration into existing designs and standard tooling.

• Wide Range of Strength Grades: Available in common grades such as 4.8, 8.8, 10.9, 12.9 (for Carbon/Alloy Steel) and A2-70, A4-70, A4-80 (for Stainless Steel) to meet diverse load-bearing requirements for critical assemblies.

• Multiple Material Options: Offered in Carbon Steel, Alloy Steel, Stainless Steel, Brass, and Copper to suit specific environmental conditions, strength needs, and conductivity requirements.

• Aesthetic & Protective Finishes: Black Zinc and Black Oxide treatments provide a durable black appearance for visual appeal or reduced reflectivity, while offering varying levels of corrosion resistance to prolong service life.

• Certified Quality & Reliability: Manufactured to strict international standards (DIN, GB, UNC, etc.) and backed by ISO9001, ISO14001, ISO45001, and SGS certifications, ensuring consistent performance and trustworthiness.

Ideal for:

• Industrial Machinery & Equipment: Securely fastening components in various types of industrial machinery, tools, and assemblies requiring reliable connections and potentially a black finish.

• Automotive Applications: Suitable for numerous uses including engine components, chassis parts, interior fixtures, and trim where a black finish is desired for aesthetics or mild corrosion resistance.

• Electronic Enclosures & Assemblies: Fastening internal or external components in electronic devices, cabinets, and panels, providing a secure connection with a non-reflective or aesthetically pleasing finish.

• Furniture & Architectural Fixtures: Used in furniture assembly, structural elements, and architectural projects for both robust fastening and integrated visual appeal.

• General Fabrication & Repair: A fundamental and widely used standard nut for countless fabrication, maintenance, and repair tasks across various industries.

Serving the Global Automotive Industry Since 1986

Founded in 1986, Zhejiang Zhongrui Auto Parts Co., Ltd. has grown into a trusted global supplier for the automotive industry. With our origins in Tangxia, Ruian, renowned as the "Auto Parts Capital of China," and now operating from a modern, strategically located facility in Jiaxing City, Zhejiang, we partner with automotive brands worldwide. Our mission is to leverage our over 38 years of deep industry experience as a direct manufacturer to understand their unique engineering and supply chain challenges, and deliver intelligent, efficient, and reliable fastener and component solutions.

Comprehensive Fastener & Component Solutions for Automotive Production & Aftermarket

Zhejiang Zhongrui specializes in the streamlined supply of high-quality Automotive Fasteners, C-Parts, Kits, and Assemblies. As a direct manufacturer with a substantial scale – encompassing a total area of 36,237 square meters and a factory area of 20,000 square meters, backed by 130 million RMB in fixed assets – we provide transparent processes and highly flexible responsiveness. This direct approach significantly helps our clients reduce costs, shorten lead times, and minimize supply chain complexity while ensuring seamless and reliable procurement. We are proud to be an IATF 16949 certified manufacturer, committed to exceptional product quality and understanding the diverse needs of our customers in both OEM production lines and the automotive aftermarket. With Zhejiang Zhongrui, you gain a stable supply chain partner with significant capacity and decades of manufacturing expertise.