Crafting Confidence, Driving Reliability: Zhejiang Zhongrui Auto Parts Delivers Quality High Strength Automotive Fasteners-Zhejiang Zhongrui Auto Parts Co., Ltd.

At Zhejiang Zhongrui Auto Parts Co., Ltd., every fastener tells a story of precision, dedication, and the trust it earns in holding vehicles together, safely and reliably. Nestled in Jiaxing, China, our team has been passionately committed to manufacturing the essential components that power the automotive world since 1986. We don't just make fasteners; we build the confidence that drives vehicle performance, with a special focus on high strength automotive fasteners.

Operating under the stringent framework of the IATF16949 certification, our 20,000 square meter plant is where experience meets meticulous quality control. It’s here that skilled hands and advanced machinery work in harmony, ensuring every single piece meets the demanding standards of the global automotive industry. Our process is a journey of quality – from carefully selected raw material cold heading to precise thread machining, strengthening heat treatments, durable anti-corrosion surface treatments like zinc plating, Dacromet, or black oxide, and finally, rigorous automated quality inspection. It’s this end-to-end care that defines our reliability.

Our heart is in high strength fasteners. We understand their critical role in the vehicle's integrity, whether it's in the chassis, powertrain, or braking systems. Our comprehensive product portfolio is a testament to this focus, covering the full spectrum of automotive fastening needs:

Bolts Built for Strength: From standard Hex Head Bolts (like those compliant with ANSI/ASME B18.2.1, DIN 933, GB/T 5783) and versatile Hex Flange Bolts (DIN 6921, ISO 15072, GB/T 16674.2) used in engines and frames, to specialized Cup Head Square Neck Bolts (DIN 603) for aesthetics and tamper resistance, and critical Passenger Car Wheel Bolts (ISO 7412) securing the very wheels that carry you.

Nuts Ensuring Security: Our range includes foundational Hex Nuts (DIN 934, ISO 4032) and Hexagon Flange Nuts (EN 1661) providing robust clamping. For applications demanding vibration resistance, we offer Prevailing Torque Type Nuts, including both Thin (DIN 985) and Thick (DIN 982) variants with non-metallic inserts, alongside durable All-Metal Lock Nuts (ANSI/ASME B18.16.6, DIN 980M).

Washers for Load & Stability: Essential for even load distribution and preventing surface damage, our Flat Washers (like DIN 125, ISO 7089, GB/T 96) are foundational. For dynamic loads and vibration damping, we provide Spring Washers (DIN 127, GB/T 93) and high-strength Conical Spring Washers (DIN 6796).

Pins for Precision & Linkage: Our range includes Parallel Pins (DIN EN ISO 8734, ISO 8735) for accurate alignment, Clevis Pins with Head (DIN 1444, ISO 2341) for reliable pivoting, and simple yet effective Split Pins (DIN 94, ISO 1234) for locking components securely in place.

Specialized Components for Unique Needs: We address specific requirements with U-Bolts (GB4231) for clamping pipes and springs, heavy-duty Anchor Bolts (like the 7-shaped type) for securing equipment, Double End Studs (GB899B, DIN939) for specific mounting scenarios, and precision Tooth Rods (ANSI/ASME B18.31.2) for mechanical interlocks.

Retaining Rings for Axial Control: Our range ensures components stay put axially on shafts and within bores, featuring External Circlips (DIN 471, DIN 983), Internal Retaining Rings for Bores (DIN 472), and specialized types like DIN 1308 V-Type Hole Retaining Rings.

We believe in openness and collaboration. While common quality issues like fracture or thread stripping can occur in the industry, our team’s strength lies in our systematic approach to problem-solving. We work hand-in-hand with our customers, applying root cause analysis and validated solutions to ensure continuous improvement and earn your confidence with every order.

Our dedication to quality is recognized globally. We proudly serve manufacturers in major automotive markets across Europe, North America, and Asia, adhering to a wide spectrum of international standards including GB/T, DIN, ASME/ANSI, ISO, and JIS. We also specialize in bringing your unique visions to life with custom fastening solutions based on your specific drawings (OE Service), offering private branding and supporting your market presence with our own export brand, RUIQI-Zhejiang Zhongrui Auto Parts.

Choosing Zhejiang Zhongrui Auto Parts means partnering with a team that cares about the integrity of your products as much as you do. We are dedicated to providing the high-quality, reliable high strength automotive fasteners that contribute to the safety and longevity of vehicles around the world.

Discover the peace of mind that comes with sourcing from a trusted, certified partner. Visit our website to explore our full range and connect with our team.

Meet a few members of our dedicated team, ready to help you:
Coco Chen, Director of Business Development: coco.chen@zjzrap.com
Freddie Xiao, Account Manager: freddie.xiao@zjzrap.com
Brian Xu, Technical Sales Assistant: brian.xu@zjzrap.com

Explore our capabilities and comprehensive product range: https://www.zjzrqc.com/product

IATF16949 Certified

HQ& Factory Address:
No. 680, Ya'ao Road, Daqiao Town, Nanhu District, Jiaxing City, Zhejiang Province, China

Online Map to see where we are exactly located: