Black zinc plated cap nut

The black zinc plated nut is a hexagonal fastener with a closed top. JINGHONG manufactures it according to the GB923 standard. The product is formed by cold heading from high-quality carbon steel, and its specifications range from M3-M20. The surface is electroplated with black zinc, presenting a uniform matte black color, which combines rust prevention performance with a low-profile appearance. The top is a hemispherical closed structure, which can completely enclose the end of the bolt, making the screw thread not exposed after installation. The surface is clean and smooth, eliminating sharp edges and preventing hand scratches or scratches on adjacent components. The bottom retains the standard hexagonal opposite edges, which is compatible with conventional wrenches or socket tools, facilitating torque application and making installation convenient.

Product Feature

Safety protection and enclosure design: The integrated circular top enclosure structure can completely cover the exposed bolt heads and end threads. This not only effectively prevents moisture, dust, and other impurities from entering the threads and causing rust, but also completely eliminates sharp edges, avoiding the risk of scratches during use.

Advanced appearance and concealment: The black zinc coating gives the product a modern and low-key high-end visual texture. The cover design ingeniously hides the fasteners, making the surface of the assembled product clean and smooth, greatly enhancing the overall grade of the terminal product.

Stable drive and convenient installation: The bottom retains the standard hexagonal shape, compatible with various conventional wrenches or socket tools, facilitating the application of large torque to ensure the stability of the connection and the efficiency of installation.Corrosion resistance and wear resistance balance: Compared to ordinary oxidation blackening, the black zinc treatment forms a dense zinc layer on the carbon steel surface, with good rust prevention and wear resistance properties. At the same time, the black appearance can effectively cover minor scratches and oil stains during daily use.

Our Strength

·  Direct from manufacturer to customer, On time delivery

·  Completely fastener products,offers one - stop shopping service.

·  High quality and competitive price, saving your cost.

·  Product complies with iso9001 and ts16949 certification

·  After shippment, we will offer the Material report and Test report.

Product Application

Mechanical equipment and automotive industry: Widely used for fixing the shells of mechanical equipment, protecting transmission components, interior parts of automobiles and non-critical structural connections. It can both prevent dust and water, and enhance the visual unity of the internal structure.

Furniture and commercial display: It is an ideal choice for exposed and visible connection points in high-end office furniture, home assembly, and shopping mall display cabinets. It not only ensures structural strength but also avoids the awkwardness of ordinary nuts.

Public facilities and outdoor equipment: Applicable to the ends of stair handrails, balcony railings, garden iron fences, and the top sealing and decoration of outdoor fitness equipment, balancing the functions of safety against bumps and beautifying the environment.Electronic and electrical equipment: Used for fixing the shells of equipment, encapsulating junction boxes, and fixing the panels of instruments and meters, providing neat grounding or connection surfaces.

Send Inquiry

Please feel free to fill your inquiry in the form below. We will reply you in 24 hours.

Q: Are you trading company or manufacturer ?

A: We are factory

Q: How long is your delivery time?

A: Generally it is 2-5 days if the goods are in stock. or it takes around 20 days if the goods are not in stock, certainly,it is according to your quantity.

Q: Do u do Non-standard Fasteners,and How about the OEM/ODM?

A:Yes,we do Non-standard Fasteners,OEM/ODM as well,and we have 20 years more experience in this line.We have complete production line, R&D Center. Pre-sales and after-sales support. Let u no worries about the quality.

Q: Do you provide samples ? is it free or extra ?

A: Yes, we could offer the sample for free,but u need charge the freight at the first time.

Q:Do you sell little quantity,like few hundred and few thousand?

A: It depends on the stock. if we have ,that's ok. if not,it needs MOQ.