Northern China's Largest Self-Tapping Screw Manufacturer
Since 2006, Sinsun Hardware has engineered over 20,000 SKUs of high-performance fasteners — backed by German machinery, 12+ quality checkpoints, and a 30,000 m² integrated facility serving 40+ countries.
About Sinsun Hardware
Sinsun Hardware, established in 2006, is a leading manufacturer and global supplier of high-quality fasteners. As Northern China's largest producer of Self-Tapping Screws, we operate from a gigantic 30,000 sqm integrated facility that includes modern production zones, a 12,000 sqm smart warehouse (18,000+ pallet capacity), and multi-language customer support centres. Our yearly supply of over 8,500 containers consistently services key global markets such as the Middle East, Southeast Asia, South America, and Russia.
Our production prowess is driven by German-imported machinery, precision Taiwanese technology, and a dependable staff of trained specialists. We offer over 20,000 SKUs of nails, screws, wires, and rivets, each undergoing 12+ stringent quality checks to assure outstanding polish (Ra ≤ 0.4μm), corrosion resistance (1,000+ hours salt spray), dimensional accuracy (±0.02mm), high strength (1,000+ MPa), and consistent hardness (HRC 28-32).
We specialise in offering unique fastening solutions that are tailored to your specific needs. Our technical team works directly with clients from design to manufacturing, providing support for unusual materials, coatings, dimensions, and performance requirements to ensure that each custom order matches exact specifications.
We guarantee reliable and rapid lead times for both standard and special orders by using our integrated facility, optimised inventory, and effective planning. Sinsun Hardware is your strategic partner, committed to delivering quality, innovation, and on-time performance worldwide.
Get a Quick QuoteSinsun Hardware
From Sinsun's founding in 2006, we have grown into a leading Chinese fastener manufacturer. Explore our journey of expansion, from establishing exports in 2012 and integrating German technology in 2018, to achieving a 36,000-ton annual output and adding advanced heat treatment lines by 2025.
Sinsun Hardware founded in Shijiazhuang, Northern China, with a focus on self-tapping screw manufacturing.
Established international export channels, entering key markets in the Middle East, Southeast Asia, and South America.
Integrated German-engineered multi-station cold heading machines, elevating production precision and output capacity.
Achieved 36,000-ton annual output; added advanced heat treatment lines and expanded smart warehouse to 18,000+ pallet capacity.
Sinsun Hardware
At SINSUN, our quality control begins at the source. We start with premium raw materials from XING TAI Steel, then perform in-house spheroidizing annealing and precision wire drawing in our own plant. This end-to-end control, supported by our advanced drawing machines and gas-fired furnaces, ensures superior microstructure, consistency, and performance in every fastener we produce.
Core steel is sourced exclusively from Ansteel Group, utilizing 10,000+ tons/year of C1022A steel — guaranteeing consistent metallurgical properties across every production batch.
At SINSUN, we combine German-engineered multi-station cold heading machines with precision Taiwanese production technology. Our specialized processes, including tail-gripping for drill screws, ensure every fastener is manufactured with utmost accuracy and consistency in our state-of-the-art production facility.
Over 200 German-imported multi-station cold heading machines produce 1,200+ pieces per minute per machine. Our CNC machining capabilities handle complex, non-standard fastener geometries and critical tolerances, while thread rolling ensures excellent fatigue resistance.
SINSUN operates four dedicated heat treatment lines, allowing for precise and controlled processing time to achieve consistent hardness and enhanced product durability. This in-house capacity ensures both exceptional fastener quality and reliable delivery schedules. Our advanced heat treatment systems support our end-to-end manufacturing control, with a 20-ton/day capacity delivering fatigue life exceeding 50,000 cycles.
SINSUN offers flexible OEM and ODM packaging tailored to your needs. With a professional packaging team and a 12,000 m² warehouse, we provide custom packaging, 3D design previews, and full logistics support to deliver a seamless, worry-free experience from production to shipment.
Our 12,000 sqm dedicated packaging warehouse enables 24/7 operations with automated sorting (3,000+ cartons/hour) and direct container loading (50+ TEUs/day), ensuring rapid and reliable fulfillment for both standard and custom orders.
Download CatalogQuality Assurance
Every SKU we produce undergoes a rigorous multi-stage quality control process, from raw material inspection to final shipment audit — ensuring zero-defect delivery to our global customers.
Ra ≤ 0.4μm surface finish achieved through precision grinding and polishing processes, ensuring smooth, consistent appearance and reduced friction in application.
1,000+ hours salt spray test compliance. Coatings include zinc plating, Dacromet, and zinc diffusion, validated in our in-house salt spray testing chamber.
±0.02mm tolerance maintained through automated optical measurement and manual QC checks at every production stage, with Statistical Process Control (SPC).
1,000+ MPa tensile strength verified through in-house tensile testing. Material certificates and full test reports provided with every shipment.
HRC 28-32 hardness range achieved through four dedicated heat treatment lines, with hardness testing conducted on every production batch.
Full compliance with ISO 9001, DIN, ANSI, and JIS standards. Our proprietary quality management system provides complete traceability from raw material to finished product.
Our Advantages
Four pillars of manufacturing excellence that set Sinsun apart from every competitor in the global fastener market.
Over 200 German-imported multi-station cold heading machines (producing 1,200+ pieces/min/machine) and 4 dedicated in-house heat treatment lines (20-ton/day capacity) guarantee superior screw quality, strength, and durability (fatigue life exceeding 50,000 cycles).
Core steel sourced exclusively from Ansteel Group, utilizing 10,000+ tons/year of C1022A steel, ensuring consistent metallurgical properties and superior performance in every fastener we produce.
Our 12,000 sqm dedicated packaging warehouse enables 24/7 operations with automated sorting (3,000+ cartons/hour) and direct container loading (50+ TEUs/day).
Seamlessly serve orders from unique custom orders (1-piece prototypes) to massive wholesale volumes (100M+ unit monthly capacity), with on-time delivery rate consistently exceeding 99%.
Sinsun Hot Products
We design, manufacture, and supply a comprehensive range of nails, screws, wires, and rivets for global industries.
Factory & Facility
For industries where reliability is non-negotiable, Sinsun delivers more than just fasteners — we deliver certified security, precision, and partnership. As a specialist manufacturer, we provide end-to-end solutions for OEMs and distributors worldwide, ensuring every bolt, screw, and nut meets the highest standards of performance and durability.
Request a QuoteWhy Choose Sinsun
We combine advanced technology with deep engineering expertise to serve automotive, aerospace, construction, machinery, and electronics sectors worldwide.
We are not just suppliers, but your partners. Our engineering team assists in optimizing connection solutions, material selection, and conducting cost-benefit analyses, while providing complimentary sample testing services. Our technical team works directly with clients from design to manufacturing, providing support for unusual materials, coatings, dimensions, and performance requirements.
Certified with our proprietary quality management system, we rigorously control the entire process from raw material procurement to cold heading, heat treatment, and surface finishing. Our laboratory conducts salt spray, hardness, and torque tension testing.
Utilizing an ERP-driven intelligent warehousing system, we dynamically manage extensive standard parts inventory to ensure rapid delivery of routine products. Our on-time delivery rate consistently exceeds 99%.
Tailored to your requirements, we offer reverse engineering design, special material customization, thread specification customization, and surface treatment processes such as Dacromet coating or zinc diffusion coating.
Our worldwide service network ensures you receive technical and commercial support anytime, anywhere. We flexibly meet your diverse needs, serving as your reliable partner for business expansion across 40+ countries.
We combine advanced technology with deep engineering expertise to serve a wide range of sectors, including automotive, aerospace, construction, machinery, and electronics.
Don't just find a part; develop the optimal solution. Our engineering team partners with you from the concept stage.
Our vertically integrated manufacturing facilities ensure control over every stage of production.
Your confidence is built on our commitment to zero defects.
We are your reliable link in the global supply chain.
How We Work
Our structured workflow guarantees transparency, on-time delivery, and a perfect match for your specifications.
We begin by deeply understanding your application, challenges, and project goals.
Our engineers propose solutions and provide a detailed, transparent quotation with timelines.
We produce and deliver prototypes for your rigorous testing and final approval.
Mass production begins, with scheduled quality checkpoints and updates provided to you.
Every batch undergoes final audit, and all agreed documentation is prepared.
Your order is shipped efficiently, with our team ready for any follow-up or future needs.
Why Industry Leaders Choose Sinsun
Decades of collective experience in fastener engineering and metallurgy, serving OEMs across Europe, North America, and Asia.
Control over the entire process ensures quality and supply chain security, from raw material sourcing to final shipment.
We adapt to your needs, whether for custom parts or high-volume standards — from 1-piece prototypes to 100M+ unit monthly capacity.
Trusted supplier to OEMs across Europe, North America, and Asia, with 8,500+ containers shipped annually to 40+ countries.
Project Case Studies
Real-world examples of how Sinsun's engineering expertise and manufacturing precision solve complex fastening challenges for global clients.
A tier-1 automotive supplier needed a custom flange bolt with exceptional vibration resistance and weight reduction.
Redesigned the component using a tailored alloy and specialized thread-locking feature. Managed full testing suite to meet automotive standards.
15% weight reduction, passed 2000-hour vibration testing, and seamless integration into client's high-speed assembly line.
A marine engineering company required large-diameter bolts with extreme corrosion resistance for a harsh saltwater environment.
Recommended and supplied a duplex stainless-steel grade with a specialized passivation coating. Provided full traceability and material certification.
Project completed with zero fastener failures, exceeding the client's lifecycle durability expectations.
Clients & Connection
Every month, we welcome clients from across the country for on-site factory visits, demonstrating our transparency and production strength. As a trusted industry partner, we actively participate in global exhibitions to connect, exchange insights, and showcase innovation — building lasting relationships based on quality and reliability.
FAQ
Everything you need to know about working with Sinsun Hardware as your global fastener partner.
Ready to Partner with Sinsun
Your project deserves a fastener partner who understands the critical link between a single component and overall system integrity. Contact Sinsun today for a detailed consultation. Send us your drawings or specifications, and our engineering team will provide a solution-focused quote within 48 hours.
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