YH FASTENER Company Profile
YH FASTENER is a professional enterprise specialized in the R&D, production and manufacturing of precision components. Adhering to the development philosophy of "Driving higher sales with superior quality", we are committed to becoming a trusted precision manufacturing partner for customers, and always uphold the business principle of win-win cooperation, providing high-quality precision fastener products and customized solutions for various industries.
Quality Inspection
SUS Material Grade
Automated Production
OEM/ODM Solutions
Core Precision Engineering Series
Discover our cutting-edge fastening solutions. Our full range of products are widely used in positioning, locking, clamping, rotational positioning and sound positioning of industrial parts and components.
Advanced Spring Plungers
Spring plungers are our flagship offering, representing the pinnacle of mechanical positioning technology. These essential components provide accurate and repeatable end forces through a meticulously engineered internal spring mechanism housed within a threaded cylinder. Our spring plungers cover multiple model series including DGDS, PZ, PZHW, POM, TH, ST and OS. They are specifically designed to deliver reliable pressure and positioning in tight spaces. Whether it's for aerospace applications, advanced robotics, or complex automotive assemblies, our spring plungers ensure exact alignment. The elasticity of the springs can be tailored precisely to your operational requirements, offering light, standard, or heavy load options.
Precision Ball Plunger
The Ball Plunger utilizes a hardened ball bearing to minimize friction while providing a secure detent mechanism. Ideal for applications requiring smooth insertion and extraction, ball plungers are extensively used in medical devices, electronic enclosures, and precision tooling. For applications in extreme environments, we have carried out rigorous material upgrades for core products such as stainless steel locating balls, adopting SUS316 material to greatly enhance the fatigue resistance of products. This ensures they can adapt to more complex working conditions, resisting corrosion and wear over millions of cycles. The beads and shells can be fully customized in terms of materials to match specific environmental demands.
Index Plunger Pin
Index Plunger Pins (also known as indexing plungers) are vital for rapid adjustment and safety locking mechanisms in industrial automation. Designed for machinery that requires frequent disassembly, assembly, and positioning accuracy—such as mechanical manufacturing, automotive maintenance, and mold assembly—these pins offer a quick-release function that enhances operational efficiency. Featuring a secure locking head, our index plunger pins prevent accidental retraction caused by intense vibrations. Available with various handle types (T-handle, ring handle, or knob), they provide ergonomic solutions for manual adjustments. We ensure that the specifications, pressure loads, and other parameters of all models can be adjusted according to customer needs.
Comprehensive Product Portfolio & Customization
In terms of product portfolio, we boast a rich and comprehensive range of precision fastener products. Our core offering is the spring plunger series, complemented by a full line of standard parts including threaded plungers, multi-pin plungers, universal balls, ball lock pins & slot pins, index pins and flange plungers.
We also provide highly specialized customized processing services such as turning and CNC machining. Universal balls, ball lock pins, index pins and other products are available in a variety of specifications. All core products support personalized customization: for example, the beads, springs and shells of plungers can be customized in terms of materials, the elasticity of springs can be tailored, and the specifications, pressure loads and other parameters of all models can be adjusted according to customer needs, fully meeting the diversified application needs of different industries.
R&D, Technology & AI-Driven Manufacturing
In R&D and technology, we have a professional in-house R&D team that continuously optimizes product performance. By integrating cutting-edge engineering software and simulation technologies, we push the boundaries of mechanical fastening. Our commitment to innovation is reflected in our material science advancements, particularly in deploying SUS316 stainless steel for spring thimbles to combat extreme environmental degradation.
In production and manufacturing, we have established a standardized and automated production system, with multiple professional production workshops including product assembly workshops and spring production workshops. The shell, spring and overall assembly of products are all completed automatically, effectively ensuring the stability of product quality. Meanwhile, we scientifically formulate production targets, strictly implement and monitor the production process in real time, and continuously optimize the production process through data analysis to ensure high efficiency in production and product delivery.
Stringent Quality Control System
Zero-defect policy driven by advanced electronic measurement and metallurgical analysis.
Material Analysis
Before production, we identify the composition of procured materials with professional testing instruments such as the GaoShen Spectrometer to ensure they strictly meet customer standards and metallurgical requirements.
Performance Testing
During production, we utilize JISO Elasticity Testing Equipment and precise force-measuring machines to accurately test and record product performance, guaranteeing the precise kinetic response of every Spring Plunger and Ball Plunger.
Electronic Verification
All products undergo further electronic size measurement using DISOFOO electronic measurement equipment after manual inspection. Before shipment, batch screening is conducted to comprehensively ensure the overall quality of products.
Empowering Global Industries
With a rich variety of products ranging from specialized Index Plunger Pins to heavy-duty Spring Plungers, backed by professional R&D capabilities, automated production processes, and stringent quality control, YH FASTENER provides a reliable guarantee for the efficient operation of equipment. Our dedication to defining reliability by precision makes us an excellent cooperative choice for the application of precision fasteners in various industries worldwide. Partner with Yuhuang today and experience the pinnacle of mechanical positioning.