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Ruian Mingding Hardware Co., Ltd – A trusted manufacturer of cotter pins, slotted spring pins, coiled spring pins, E-type circlips, and custom non-standard parts for over 10 years.
Ruian Mingding Hardware Co., Ltd is a professional manufacturer specializing in precision fasteners and hardware components. With over a decade of experience, we have built a strong reputation for quality, reliability, and technical expertise in the global market.
Our product range includes cotter pins (GB879, DIN1481), slotted spring pins, coiled spring pins, E-type circlips, standard internal and external circlips, and a wide variety of non-standard punching parts tailored to customer specifications.
Our products meet international quality benchmarks and are widely used in automotive, machinery, electronics, and industrial equipment sectors.
High-quality, precision-engineered hardware components designed for durability and performance across industries.
GB879, DIN1481 compliant | M1×8 to M10×140
DIN94, ISO1234 | M1.5×5 to M12×100
ASME B18.8.1 | M2.5 to M12
M2 to M15
Metric & Imperial sizes
For bore retention
Custom shapes and sizes
Precision tapered design
For high-load applications
M1 to M3 sizes
AISI 304 / 316
Non-magnetic & conductive
Rigorous QC processes ensure every batch meets international standards.
Efficient production and logistics for on-time global shipments.
Capable of producing non-standard parts per customer specifications.
Trusted by clients across Europe, North America, and Asia.
Our cotter pins, slotted spring pins, and coiled spring pins meet ASME/ANSI B18.8.1-2000, DIN94, GB91, ISO1234, B.S., and DIN1481 standards.
Yes, we specialize in manufacturing non-standard punching parts based on customer drawings and specifications.
We use carbon steel, stainless steel (AISI 304/316), brass, and other materials as per application requirements.
Yes, we provide free samples for evaluation. Please contact us through the official website for sample requests.
MOQ varies by product type and customization level. Contact us for specific details based on your needs.
For inquiries, quotes, or technical support, please visit our official website to contact the team directly.
Company: Ruian Mingding Hardware Co., Ltd
Address: Wufang Industrial Zone, Changqiao, Tangxia, Ruian, Zhejiang, China
Phone: +86 577 65295826
Mobile: 18958876066 (Alice)
Email: alice_qian77@hotmail.com
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