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The Pin & Ker atachment svstem is the conventionalmethod for atachments made...
The Pin & Ker atachment svstem is the conventionalmethod for atachments made...
The Pin & Ker atachment svstem is the conventionalmethod for atachments made...
Jiangsu Aozheng Metal Products Co., Ltd. is a professional industry and trade integrated enterprise, with a modern production plant covering an area of 32,000 square meters. We specialize in the R&D, production and supply of a full range of high-quality construction hardware products. Our core product portfolio includes exterior wall cladding fixing system brackets, C channels, seismic support brackets, anchor bolts, cast-in channels, concrete embedded parts and photovoltaic bracket clamps, which cater to various customized construction and engineering installation requirements. Our products are manufactured from premium raw materials including stainless steel, aluminum alloy, carbon steel and low alloy steel. Equipped with advanced industrial production technologies, we adopt automated cutting, extrusion, stamping, welding, CNC machining and laser processing craftsmanship. Strict standardized production and precise processing procedures are implemented throughout production to ensure stable, reliable and high-standard product quality. Integrating raw material forming and mechanical processing, our factory operates as a large-scale, diversified and professional manufacturing base for construction hardware. Upholding strict quality standards and high-end global market positioning, we achieve an annual production capacity of 8,000 tons of diverse building materials. Our products are widely exported to dozens of countries and regions across the globe, covering the United States, Germany, Italy, Belgium, the United Kingdom, Japan, Australia, Canada, Russia, Central Asia and the Middle East. We have established long-term, stable and strategic cooperative relationships with large construction enterprises and renowned engineering teams worldwide. Supported by superior product quality and professional all-round services, we have become a core and trusted building material supplier for our global partners in China.
A facade contractor on the Gulf Coast recently asked us why a granite rainscreen and a marble lobby wall could not share the same fixing hardware. T...
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READ MOREProducts > Anchor Bolt > Stone Flat Head Bolt
As a Stone Flat Head Bolt Manufacturers, we match product configuration to the application, operating limits, interfaces and acceptance criteria defined for each project.
Jiangsu Aozheng Metal Products Co., Ltd. is a professional Stone Flat Head Bolt manufacturer and supplier based in China. We design and produce flat head anchor bolts specifically for natural stone cladding, granite and marble facade systems, and curtain wall anchoring. Our bolts are available in stainless steel grades 304/A2 and 316/A4, with custom dimensions and thread configurations to match your project drawings.
With a 32,000 m² production plant and an annual capacity of 8,000 tons of construction hardware, we combine automated cutting, stamping, CNC machining and laser processing to deliver bolts that meet strict dimensional and material standards. Our factory serves global construction teams, facade contractors and OEM distributors across the US, Europe, Australia and the Middle East.
Our stone flat head bolts are part of the anchor bolt family, used to fix stone panels to supporting brackets or subframes. The flat head design allows countersunk installation, keeping the stone surface flush and reducing stress concentrations. We supply two main configurations:
For applications requiring a connection point at the bolt end, such as hanging stone panels or attaching to undercut anchors. Available with full thread or partial thread.
Standard flat head bolt with continuous thread for maximum engagement in stone or concrete. Used in pin-and-kerf and similar mechanical attachment systems.
Both types are available in 304/A2 stainless steel for interior or dry environments and 316/A4 for coastal, high-humidity or chemically aggressive conditions. We also produce carbon steel versions with hot-dip galvanized or zinc plating for budget-sensitive projects.
We manufacture stone flat head bolts according to your drawings or samples. Our engineering team can adjust diameter, length, head shape, thread pitch and material grade to match the structural requirements of your facade system. Typical specifications include:
| Parameter | Available Range | Notes |
|---|---|---|
| Diameter | M6 – M16 | Custom sizes on request |
| Length | 20 mm – 300 mm | Dependent on stone thickness |
| Thread | Full or partial | Metric or inch |
| Material | 304/A2, 316/A4, carbon steel | Stainless steel for corrosion resistance |
| Head type | Flat countersunk, eye, terminal | Custom shapes available |
We also offer surface treatments such as passivation, electropolishing and clear coating to improve corrosion resistance and appearance. For projects requiring traceability, we can provide material certificates and test reports.
Quality is controlled at every stage, from incoming raw material inspection to final dimensional checks. Our in-house laboratory is equipped with a spectrometer, tensile tester and surface inspection tools to verify chemical composition, mechanical properties and finish. We perform 99.99% inspection on finished products, including thread gauging and head profile checks, to ensure consistency across large orders.
Our factory holds ISO9001 certification, and we can provide test certificates from third-party labs such as SGS, BV or TUV when required by your contract. For each batch, we maintain records of material heat numbers and production parameters for full traceability.
Stone flat head bolts are often used in conjunction with our Nature Stone Cladding System brackets and undercut anchors. We can supply the complete fixing package, including bolts, brackets, washers and nuts, to simplify procurement and ensure compatibility. Our engineering team can review your facade layout and recommend the correct bolt type, spacing and torque values based on panel weight and wind load calculations.
For projects using Granite Facade System or marble panels, we help you select the appropriate stainless steel grade to avoid galvanic corrosion between the bolt and stone anchor. We also provide installation guidance to prevent over-tightening, which can crack stone panels.
To prepare a precise quotation and production drawing, please provide the following details:
With this information, we can confirm feasibility, provide samples for approval, and schedule production to meet your project timeline.
We pack stone flat head bolts in cartons or wooden pallets, with rust-preventive oil or shrink wrap for stainless steel products. For large orders, we can use steel crates to protect threads during sea freight. Our factory is located near Shanghai port, ensuring efficient export logistics to global destinations. We also support air freight for urgent requirements.
Our sales team provides timely responses within 12 working hours, and we offer after-sales technical support to resolve installation issues. We have experience working with major construction companies and can adapt to your quality and documentation standards.
A stone flat head bolt has a countersunk head that sits flush with the stone surface, reducing protrusion and stress points. Regular anchor bolts often have hex or heavy heads for structural steel connections. Our flat head bolts are designed specifically for stone cladding where a smooth, low-profile finish is required.
Yes, we specialize in OEM/ODM production. You can send us your drawings or samples, and we will produce bolts to your exact specifications, including diameter, length, thread pitch and head shape. We also offer full thread or partial thread options.
For coastal or high-chloride environments, we recommend 316/A4 stainless steel due to its higher molybdenum content, which provides superior resistance to pitting and crevice corrosion. 304/A2 is suitable for most interior and urban applications.
Yes, we can produce pre-production samples for your approval. Samples are typically shipped within a week after confirming specifications. For custom designs, we may charge a sample fee that is deducted from the final order.
Our MOQ depends on the bolt size and material. For standard stainless steel bolts, we can accommodate small trial orders. For custom sizes, we may require a higher quantity to justify tooling and setup. Contact us with your requirements for a specific quote.
We will wholeheartedly provide you with high quality products, reasonable price, on-time delivery and attentive service.
Maoshan Taiwan Business Industrial Park, Dinan Town, Xinghua City, Jiangsu Province, China
+86-523-82799922
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