Product Category / Services

  • Flange Nuts

    High quality Various materials M10-M100

  • High Strength Nuts

    High quality Various materials M10-M100

  • Slotted Nuts

    High quality Various materials M10-M100

  • Through Nuts

    High quality Various materials M10-M100

  • Acorn Nuts

    High quality Various materials M10-M100

  • Thin Nuts

    High quality Various materials M10-M100

Business Description

Ningbo Chenda Fastener Co., Ltd. - Professional Nut Manufacturer


Ningbo Chenda Fastener Co., Ltd. is a leading manufacturer specializing in high-strength nuts, including hex nuts, heavy hex nuts, flange nuts, slotted nuts, and more. Located in the renowned fastener production hub of Zhenhai Industrial Zone, Ningbo, we are one of the earliest established and largest companies dedicated to the research, development, and production of high-strength nuts, high-strength bolts, GB1228 steel structure bolts, and related products.


High-Quality Nuts Only


We are committed to providing only high-quality nuts, utilizing premium materials such as 35#, 45#, 40MnB, 40Cr, 35CrMo, 35CrMoA, 42CrMoA, B7, SS304, SS316, SS316L, 35K, and 45K. Our products range in size from M10 to M100 and adhere to various standards including GB (Chinese National Standard), ASME/ANSI (American Standards), JIS (Japanese Standards), SH/HG (Petrochemical/Chemical Standards), NB/T (Pressure Vessel Standards), and EN (European Standards).


Advanced Manufacturing and Testing


Our company is equipped with a variety of automated production and testing equipment, using high-quality raw materials sourced from both domestic and international large-scale steel mills. We operate under a modern corporate system, ensuring that our product quality consistently leads the industry.


Main Products


High-Strength Nuts:

GB6170 hex nuts

GB6171 fine-thread nuts

GB6172 thin nuts

GB6173 thin fine-thread nuts

GB6175 heavy hex nuts

GB6176 heavy fine-thread nuts

SH3404 large hex chemical nuts

GB1229 steel structure nuts

GB1230 steel structure flat washers


High-Strength Hex Bolts:

GB5782-GB8783 hex bolts, including 10.9 grade tower crane bolts


High-Strength Fine-Thread Bolts:

GB5785-GB5786 fine-thread bolts


Steel Structure Bolts:

GB1228 large hex head bolts for steel structures


Galvanized Series:

Photovoltaic hot-dip galvanized series

Hot-dip galvanized bolts

Galvanized iron tower bolts

Power fittings and accessories


Stock Availability


We offer a variety of nuts with white and color zinc plating. We also custom manufacture high-strength, high-difficulty, high-precision non-standard parts.


Our products are widely used in industries such as petroleum, chemical, construction, transportation, electric power, and defense. Over the years, our product quality and after-sales service have been highly praised by customers and industry professionals, making our products popular across the country.


Operating Philosophy


Our company operates on the principles of "survival through quality, development through credibility, and efficiency through service." We prioritize quality and customer satisfaction, strictly adhering to national standards and customer requirements. Choosing Chenda's products means choosing a reliable guarantee for construction projects and machinery manufacturing! We are dedicated to providing you with excellent and sincere service. All employees of Chenda Fastener Co., Ltd. warmly welcome both new and old customers to contact us, visit, and discuss cooperation opportunities!