Frequently Asked Questions (FAQ)

High-quality manufacturer of hand screws, knob screws, and adjustable handles, focusing on customization and ISO 9001 certified quality.

FAQ

Hand knobs manufacturing

UJEN manufactures standard hand knobs or thumb screws made from steel and stainless steel and provides custom solution.
If you don't see the size that you need, let us know and UJEN will quote per your print design. You can also read the FAQs below.
With the help of these FAQs you will easily be able to select the best hand knobs or thumb screws solutions for your end products.


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UJEN specializes in the innovative design and manufacturing of hand knob screws and related hardware accessories. With over forty years of extensive experience, we lead in the field of precision injection...

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Our innovation goes beyond the design of clamping knob screws, extending to technological improvements and material applications. For instance, our hand knob screws employ a special end-face chamfer technology,...

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UJEN understands the diversity of market demands; hence, we provide comprehensive customization services ranging from material selection, sizing, to surface treatment for our knob screws. Our team of experts...

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Quality is the lifeline of UJEN. From the selection of raw materials to production process control, every step is strictly executed according to international quality standards. Our quality control team...

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Our spring plungers stand out not only due to their high quality and innovative design but also because of our deep understanding of customer needs and our rapid response capability. UJEN's fixed plungers...

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Environmental protection is an integral part of our operation. UJEN is committed to reducing the environmental impact of our production processes, strictly adhering to international environmental standards...

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Our knob screws are widely used in various fields, including mechanical manufacturing, medical equipment, sports equipment, monitor stands, fitness equipment, home appliances, and outdoor facilities. This...

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Customer satisfaction is our top priority. We have a dedicated customer service team responsible for addressing customer feedback and after-sales issues, ensuring quick responses and effective solutions....

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Our plastic head screw nuts R&D team consists of industry-experienced engineers and designers, possessing forward-thinking design concepts and deep technical expertise. The team constantly pursues innovation,...

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As a company with an international outlook, UJEN actively expands into the global market, establishing stable cooperative relationships with clients in countries and regions such as Japan, South Korea,...

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Selecting the suitable hand-tighten screw involves considering several factors, including the application environment (such as temperature, humidity, chemical exposure), load requirements, installation...

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Yes, we offer comprehensive customization services, including material selection, color, size, and surface treatment for hand-turned screws. Whether you need to improve the product's corrosion resistance,...

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Maximize Precision with Top-Quality Hand Screws for Industrial Use

Based in Taiwan since 1994, UJEN DEVELOPMENT CO., LTD. expertise in manufacturing high-quality hand screws, knob screws, adjustable handles, grip knobs, and indexing plungers. Their commitment to customization and precision ensures each component, from hand screws to indexing plungers, meets rigorous standards. This dedication positions UJEN as a leader in supplying durable and reliable industrial components to global markets.

UJEN Development Co., Ltd. is a leading manufacturer of precision-engineered hand screws, knob screws, plastic knobs, adjustable handles, and indexing plungers for a variety of industrial needs. Our 45-year legacy, combined with ISO 9001:2015 certification, underscores our commitment to quality, innovation, and customer satisfaction. Specializing in custom solutions, we excel in professional moldmaking, enhancing equipment functionality across industries.

UJEN has been offering customers high-quality hand screws for industrial machinery since 1994, both with advanced technology and 47 years of experiences, UJEN ensures each customer's demands are met.