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


Product Category

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Pull Pin Spring Knob - Indexing pins with a wide variety of functions and sizes are available for you to choose from.

Pull Pin Spring Knob

Spring Pull Pins are suitable for use in areas where specific positions or angles are often adjusted,...

Hand Screw (Nut) - Knob screws

Hand Screw (Nut)

The hand screw is suitable for use in areas that are frequently adjusted or disassembled, such as displacement,...

Adjustable Handle Screw (Nut) - Adjustable levers screws

Adjustable Handle Screw (Nut)

Universal handle screws come with a ratchet-like design, suitable for use in institutions with limited...

Control Knob - Adjusting knob

Control Knob

The control knob has a pointing function and is generally used as a variable resistor adjustment, suitable...

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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.