- Durable construction: The star head is molded from high-quality bakelite for strong toughness, impact resistance, and long service life. The screw shafts are made of carbon steel with rust protection and high hardness for reliable, long-lasting performance. - Secure, adjustable fastening: Full-thread screw design provides consistent engagement along the shaft for secure installation, straightforward removal, and fine adjustment without slipping. - Comfortable, easy operation: Star-shaped, knurled handles give a comfortable grip and better torque control for hand-tightening or loosening without tools. - Corrosion-resistant performance: Carbon steel screws are treated for rust protection so they maintain strength and appearance in typical workshop and field environments. - Wide compatibility and use: Designed for thumb-screw applications across mechanical equipment, electronic and communication equipment, hardware assemblies, and furniture fittings where a hand-operable fastener is required. Practical use scenarios - Service panels and access covers: Use these thumb screws to quickly open and secure machine covers or service panels, allowing fast maintenance without tools. - Electronic racks and mounting brackets: Hand-tighten star-head screws when installing or adjusting components in server racks, test benches, or communication cabinets. - Furniture assembly and decoration: Ideal for knobs and fixtures on furniture that require repeated adjustment or removal, such as removable panels, decorative hardware, or adjustable shelving. What this product solves - Eliminates the need for tools for routine adjustments or access. - Reduces wear and failure from hand tightening thanks to the durable bakelite head and hardened carbon steel screw. - Provides a reliable, corrosion-resistant fastening option for repeated use across industrial and consumer applications.