Plastic knob

brass

The plastic knob with brass insert is designed for easy, tool-free fastening and adjustment. Made from durable engineering plastic with a high-strength brass insert, it provides excellent wear resistance and reliable performance in machinery, electronics, and household equipment. The production of the plastic knob with brass insert begins with precision machining of brass inserts, ensuring accurate dimensions and strong thread durability. Next, the brass inserts are placed into the mold, and injection molding is carried out using high-quality engineering plastics such as PA or ABS. The molten plastic flows around the insert, forming a secure mechanical bond and creating the outer knob structure. After molding, the knobs undergo surface finishing such as polishing or texturing to improve grip and appearance. Finally, each knob is checked through dimensional inspection and functional testing to ensure a tight fit, high strength, and long service life. With HLC's advanced injection molding lines and strict ±0.01 mm tolerance control, we guarantee consistent quality for every batch. At HLC, we combine over 20 years of experience in metal fabrication and plastic injection molding, allowing us to deliver reliable composite products such as plastic head thumb screws. With in-house tooling, CNC machining, and automated injection molding, we ensure precision tolerance of ±0.01 mm and consistent quality. Our facilities are IATF 16949 and ISO 13485 certified, backed by automated inspection systems to guarantee durability and performance. Whether you need small-batch prototypes or high-volume production, HLC provides customized fastening solutions that reduce costs, improve efficiency, and meet international standards. - Material: Engineering plastic + Brass insert - Surface: Polished / Customized - Tolerance: ±0.01 mm - Application: Used for manual fastening and adjustment in machinery, electronics