Thumb Plastic Hand Knob Screw (Nut) | Secure Positioning with Robust Indexing Plungers for Accurate Component Placement

Thumb-Operated Plastic Knob Screws｜Insert-Molded × High Retention Strength × Multi-Industry Applications manufacturer. For applications requiring frequent manual tightening without tools, thumb-operated plastic hand knob screws provide a simple and reliable fastening solution. By integrating the screw or nut directly into the plastic knob body through insert molding, this type of hand knob screw offers stable retention, reduced loosening risk, and consistent performance under moderate vibration and load in everyday adjustment scenarios. UJEN is a high-quality Thumb Plastic Hand Knob Screw (Nut), Hand screw, hand nut, knob screw, thumb knob, plastic knob, adjustable handle, grip knob, indexing plunger manufacturer from Taiwan since 1994. UJEN Development Co., Ltd., with over 45 years of expertise, specializes in manufacturing precision hand screws, knob screws, plastic knobs, adjustable handles, and indexing plungers. As an ISO 9001:2015 certified company, we offer custom solutions and professional mold-making capabilities to enhance product functionality and brand value. Our commitment to quality and innovation ensures we meet the specific needs of our customers in various industries. UJEN is a leading manufacturer of high-quality hand screws in the screw parts industry. With over 40 years of expertise in plastic injection mold development, we have specialized in crafting precision rotary knobs and handles. We offer technical consulting services and customized design solutions to provide full-service from design to production.