Ningyuan Fastener
Ningyuan Fastener
Explore our core product lineup of high-precision heavy structural, industrial, and electrical components manufactured to strict international tolerances.
In high-precision mechanical assemblies, the screw with no head—commonly known in standard engineering nomenclature as a set screw, grub screw, or blind screw—serves as a fundamental component to secure objects against motion. Unlike standard threaded fasteners that utilize a protruding head (such as a hex cap or pan head) to compress parts together, headless screws are designed to be driven fully within or flush with a pre-tapped bore. This architecture applies axial compression forces at the tip, locking the hub relative to the internal shaft.
By eliminating the protruding head, these fasteners allow for clean aerodynamic surfaces, minimize clearances in rotating assemblies, and eliminate hazards within high-speed rotating components like pulleys, gear assemblies, couplings, and driveshafts. Our structural design processes guarantee that torque is transferred efficiently via internal sockets, maintaining mechanical integrity in extreme load-bearing environments.
As a leading exporter in China, Handan Ningyuan Fastener Manufacturing Co., Ltd. leverages state-of-the-art cold-heading equipment and rigorous metallurgical validation to deliver superior grade 10.9 and 12.9 set screws that meet domestic and international standards (DIN 913 to DIN 916, ISO 4026 to 4029, and ASME B18.3).
A modern production ecosystem in China's Fastener Capital, Yongnian, supporting global manufacturing demands.
The global industrial market for headless screws has witnessed massive expansion due to the rapid growth of automation, electric vehicle drivetrains, consumer electronics, and high-performance energy infrastructure. Chinese fastener manufacturers play a critical role, supplying over 60% of the world's standard and specialty screws.
At the center of this industrial infrastructure is Yongnian, Handan, Hebei Province—celebrated globally as the "Fastener Capital of China." Sourcing headless screws directly from this region offers massive logistics, material procurement, and scaling benefits. The concentrated ecosystem allows for immediate access to raw drawing wire, specialized heat treatment facilities, and advanced surface coating lines.
Operating out of Yongnian since 2005 (formerly Jin Langtao), Handan Ningyuan Fastener Manufacturing Co., Ltd. has established structural R&D systems that optimize logistics costs, control alloy chemistry, and implement precision thread control to ensure that every export batch delivers flawless installation performance for industrial end-users globally.
Selecting the correct point shape is vital to determine holding torque, anti-vibration resistance, and shaft damage profiles.
| DIN Standard | ISO Metric Equivalent | Point Type | Primary Industrial Applications | Frictional & Holding Properties |
|---|---|---|---|---|
| DIN 913 | ISO 4026 | Flat Point (Chamfered) | Frequent adjustment shafts, soft metals, surface protection | Low surface damage; relies heavily on compression friction. |
| DIN 914 | ISO 4027 | Cone Point (Sharp Tip) | Permanent alignment on hardened shafts, pivot points, heavy shear | High penetration; creates a physical mechanical lock. |
| DIN 915 | ISO 4028 | Dog Point (Cylindrical) | Rotational limits, keyways, hollow shaft alignment channels | Excellent shear resistance; acts as a structural locating pin. |
| DIN 916 | ISO 4029 | Cup Point (Concave Edge) | High-vibration pulleys, drive hubs, gears, general machinery | Highest holding torque; cuts into shaft surface to resist vibration. |
Engineering Recommendation: For dynamic environments subjected to continuous reversal forces (e.g., HVAC blowers, industrial conveyor drive axles), engineers should specify DIN 916 Cup Point with a knurled rim. The knurled cup edge bites into the shaft material, preventing rotational slippage and minimizing tension loss over millions of operating cycles.
Understanding the engineering demands of high-strength fasteners. We prioritize material traceability, heat treatments, and anti-corrosion barrier coatings.
We source certified structural carbon steel (Grade 45#), alloy steel (SCM435, 35CrMo), and premium austenitic stainless steel (AISI 304 & 316) to ensure optimal core hardness, thread strength, and ductility parameters.
Our multi-station cold-forging machinery shapes headless screws with precise internal sockets (Hex, Torx, or Slotted). This ensures concentricity and prevents socket stripping during pneumatic installation torque tests.
Utilizing continuous mesh belt furnaces, carbonitriding, and oil quenching, we achieve Class 12.9 properties (core hardness of 39-44 HRC). Strict tempering cycles eliminate the risk of hydrogen embrittlement.
Protecting fasteners in harsh marine, chemical, or automotive environments using Hot-Dip Galvanizing, Zinc Flake coatings (Dacromet/Geomet), Black Oxide, or RoHS-compliant chemical passivation.
Observe the physical scale of Handan Ningyuan Fastener Manufacturing. The following video details our heavy manufacturing capacity, state-of-the-art cold drawing lines, thread rolling machines, and advanced quality assurance procedures.
From custom automotive set screws to high-strength utility construction fasteners, we ensure every part complies with ISO 9001 and automotive ELV standards. See how our technicians set up close-tolerance tooling to prevent fastener slippage under extreme load scenarios.
Headless set screws serve as vital components across a diverse spectrum of high-technology mechanical and civil engineering infrastructure.
Utility-scale solar farms must withstand severe atmospheric shear and high wind velocities. Headless screws, specifically custom cone and flat points, are used to lock tracking gearboxes, universal joints, and structural frame components onto support shafts. By preventing alignment drift, they protect the structural reliability of panels, ensuring optimal power harvesting and system lifespans exceeding 25 years.
In municipal pipe galleries, commercial HVAC structures, and earthquake-prone building services, headless screws secure seismic structural brackets to support beams. Under dynamic earth movement, these fasteners resist seismic shear stress, maintaining assembly tightness and preventing the failure of piping, electrical conduits, and ventilation networks.
High-RPM electric motors, pulleys, gearboxes, and automated CNC spindles require perfectly balanced shafts. Standard bolts introduce radial weight imbalances, leading to vibration and bearing failure. Headless screws seat completely below the hub outer diameter, preserving rotational symmetry, minimizing vibrations, and ensuring seamless torque transfer.
Modern assembly lines rely on multi-axis robotic arms. In tight joints and custom end-effectors, spacing is limited. Headless screws permit compact housings, saving space while maintaining high structural locking power. This allows for lightweight designs that reduce inertia and increase operating speeds.
Every fastener batch is produced under a comprehensive Quality Management System, backed by international industrial certifications.
Quality and reliability form the foundation of Handan Ningyuan's operations. Our products comply with stringent international standards including the ISO 9001 Quality System, EU RoHS testing, GB/T30512 automotive banned substances, and the European Union's 2000/53/EC End of Life Vehicles (ELV) directive. This ensures our headless screws are environmentally safe, durable, and suitable for high-end automotive assemblies.
Additionally, we maintain a complete array of physical testing equipment, including salt spray testers, tensile testing rigs, and digital hardness testers. We supply complete Material Test Reports (MTR) and chemical analysis certificates with all export shipments, assuring global buyers of complete material traceability.
Get answers to critical engineering and logistical questions directly from Ningyuan's technical support team.
We manufacture and export a wide range of complementary components for electrical systems, solar support structures, and heavy machinery installation.
Since 2005, we have partnered with engineering consultancies, structural designers, and international distributors to supply standard and custom screw solutions. We offer rapid tooling turnarounds, free physical samples of standard product categories, and expert engineering assistance for specific torque, load, and coating requirements.
When you are interested in any of our high-quality structural fittings or industrial fasteners, please contact us. Reach out via email, phone, or message us directly on our SNS channels. Our customer service and engineering teams will reply with quotes and technical data sheets as soon as possible.
