Multi-color Plastic Clamping Knob Screw (Nut) | Secure Positioning with Robust Indexing Plungers for Accurate Component Placement

Dual-Color Plastic Fastening Knob with steel Screws｜World-First Design × Multi-Color Variations × Visual Function Coding manufacturer. Dual-Color Plastic Fastening Knob Screws—also known as multi-color knob screws—are UJEN’s globally patented innovation, combining visual appeal with functional clarity. Each knob features a center color disc and an outer color ring on the top face, both available in 7 standard colors or custom color requests, and 4 unique surface styles: Concave, Flat, Convex, and Dotted. UJEN is a high-quality Multi-color Plastic Clamping 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.