Ningyuan Fastener
Ningyuan Fastener
Handan Ningyuan Fastener Manufacturing Co., Ltd. (formerly known as Jin Langtao) has been a leading force in high-end fastener manufacturing. Located in Handan Yongnian—globally recognized as the Fastener Capital of China—our facility has evolved over 18 years of continuous technical innovation into a modern enterprise integrated with R&D, manufacturing, and international trade operations.
Our comprehensive production environment covers over 20,000 square meters. Powered by more than 50 sets of advanced high-precision manufacturing equipment and supported by over 66 skilled employees, including a core team of senior design engineers and technical operators, we manage an annual output exceeding 60 million units. With our annual sales performance reaching 70 million RMB, we actively export customized anchoring, solar mounting, and seismic structural hardware worldwide.
"Our commitment to quality starts with certified metallurgical selection and ends with rigorous environmental and structural testing, ensuring every countersunk screw we deliver meets standard tolerance protocols."
Countersunk screws, also referred to as flat-head screws, are designed to fit flush within pre-drilled recesses. This design is critical for applications that require dynamic movement, clean aerodynamics, or structural integrity without surface interference.
The standard taper angle of countersunk screws varies by geography and industry requirements. Typical configurations include 82° (common under US unified threads), 90° (metric ISO standard), and 100° (largely reserved for aerospace and marine panels to distribute tensile stresses over broader surfaces).
Unlike pan-head or hex-head bolts where load distribution happens perpendicular to the substrate surface, countersunk heads introduce axial and radial tension forces. Selecting the correct pilot hole angle prevents localized stress concentration and premature material fatigue.
We supply a variety of drive types, including Cross-Recess (Phillips), Slotted, Torx (Star drive for high-torque assembly), and Hex Socket profiles. Torx drives reduce "cam-out" risk, enabling high-speed automated installation on structural assembly lines.
High-quality countersunk screws serve critical functions across key global sectors. Our products are engineered to withstand demanding operational conditions worldwide.
In modern utility-scale solar farms, panel frames, rail components, and brackets demand flat finishes to prevent shading or mechanical interference. Our hot-dip galvanized fasteners provide long-term corrosion resistance for outdoor installations.
For building electromechanical seismic systems and integrated pipe galleries, flush joints help distribute load under dynamic seismic forces. Ningyuan's heavy-duty anchors and flush-fitting screws maintain structural integrity under stress.
High-speed industrial components rely on countersunk hex socket bolts to prevent interference with moving machine elements. Our strict dimensional controls help minimize mechanical vibration and maintain critical tolerances.
We stand by our motto: "Development is the direction and hard work is the truth."
Our manufacturing facility utilizes advanced multi-station cold heading machinery to ensure consistent head geometry and thread profile accuracy. By keeping our processing, heat treatment, and surface plating under strict quality control, we maintain minimal batch-to-batch variations.
Our Quality Management System is certified to ISO 9001 and satisfies military weapons and equipment grade checks. Additionally, all output is thoroughly tested for compliance with RoHS EU directives, GB/T30512 automotive banned substances, and 2000/53/EC ELV regulations. We ensure that heavy metals and hazardous elements remain well below mandatory thresholds.
We manufacture an extensive range of standard and custom fasteners to support diverse industrial projects. Explore our core product categories below:
Designed for high clamping force in structural applications.
High-precision self-drilling screws for sheet metal installations.
Heavy-duty anchoring solutions for concrete structures.
Self-tapping and self-drilling fasteners for heavy metal frames.
Available in grade 8.8, 10.9, and 12.9 high-tensile steel.
Heavy-duty mechanical clamps for pipeline and utility support.
Coupling nuts for thread extensions in seismic support systems.
Securing components for industrial piping and conduit routing.
Industrial environments demand custom surface protection to prevent rust and material breakdown. We offer tailored coatings and materials to meet diverse environmental specifications.
We work with high-grade carbon steel (C1022A, 10B21, 35K, 45#) for robust mechanical strength, alongside corrosion-resistant Austenitic Stainless Steel variants (SUS 304, SUS 316) for marine and chemical processing applications.
Our HDG process applies a thick zinc protective barrier (averaging over 55-85 microns), making these fasteners suitable for high-exposure outdoor settings like solar farms and electrical utility corridors.
We provide zinc plating (blue, white, yellow), black oxide, Dacromet, and Geomet coatings. These options offer excellent salt spray resistance while maintaining standard thread clearance.
From commercial roofing projects to solar mounting systems, Ningyuan fasteners are trusted for their reliable pull-out values, shear capacity, and long-term durability under environmental exposure.
Our R&D department collaborates directly with EPC contractors to engineer specialized fast-drilling screws. These solutions help reduce installation times and lower overall project assembly costs.
Every shipment undergoes rigorous mechanical testing before dispatch, including hardness checks, torque testing, and thread inspection, ensuring compliance with international fastener standards.
Our production facilities and processes are certified by international testing bodies, validating our commitment to reliable manufacturing standards.
Under international thread standards, metric flat-head screws (ISO) feature a 90° taper angle. Standard American configurations (UNC/UNF) typically feature an 82° angle, while specialty applications like aerospace panels utilize a 100° angle to distribute tensile stress over a larger surface area.
Stainless steel (such as SUS 304 or 316) is ideal for corrosive environments, food-grade equipment, and marine applications due to its natural chemical resistance. Carbon steel fasteners, when hardened and treated with hot-dip galvanizing or zinc plating, offer higher tensile and shear strength, making them suitable for heavy construction, mechanical assemblies, and solar racking.
We maintain an ISO 9001 certified Quality Management System. Our products comply with European environmental regulations, including RoHS, GB/T30512 automotive standards, and the 2000/53/EC End of Life Vehicles (ELV) directive, ensuring low heavy-metal content.
Yes. With over 50 sets of production machinery and an experienced engineering team, we provide full custom design and fabrication services. We can manufacture components to exact specifications for thread profile, drive type, length, and coating.
Lead times vary depending on the product type and volume. Standard stock fasteners can ship quickly, while custom production runs typically require 15 to 30 days. Contact our export sales department for detailed quotation sheets and MOQ requirements.
Our engineering team is ready to assist with project layouts, technical specs, and installation guidance. Contact Handan Ningyuan Fastener Manufacturing Co., Ltd. today to discuss your requirements.