Key benefits - Tool-free tightening: flat knurled head provides a secure, non-slip grip so you can tighten and loosen by hand without tools. - Durable and reliable fixing: brass construction resists corrosion and wear while providing the strength needed for repeated use. - Ready for many projects: standard M5 thread and common head dimensions make these screws a direct replacement or upgrade for panels, covers and fixtures. Product details - Thread size: M5 x 12 mm (M5 x 0.47 in), thread pitch: 0.8 mm - Head size: 12 x 4 mm (0.47 in x 0.16 in) — flat knurled head for better grip - Material: brass — easy to work with, attractive finish, rust- and corrosion-resistant, wear-resistant, high strength - Package contents: 6 knurled thumb screws Why choose these thumb screws - Fast adjustments: the knurled surface lets you secure or release parts quickly without searching for a screwdriver. - Long-lasting fit: brass offers good mechanical strength and resists corrosion in typical indoor and light outdoor environments. - Versatile compatibility: fits any component designed for M5 x 12 mm screws with 0.8 mm pitch. Typical use scenarios 1) Electronics and enclosures: secure removable panels or access covers on small electronics, routers, or hobby project boxes for quick maintenance. 2) Furniture and lighting: attach or adjust decorative panels, lampshades, or small fixtures where tool-free access is useful. 3) Instruments and equipment: fasten hardware on musical instruments, mounts or communication and test equipment that require frequent, hand-operated adjustments. What’s included - 6 x M5 x 12 mm knurled thumb screws (0.8 mm pitch, 12 x 4 mm knurled head) Compatibility and notes - Designed for any application accepting M5 x 12 mm screws with 0.8 mm pitch. - Brass construction is suitable for general-purpose indoor use and many light-duty outdoor or industrial applications; check compatibility with mating materials to avoid galvanic corrosion in mixed-metal assemblies.