sourcing map M3x30mm Knurled Thumb Screws, Black Steel Flat Head Thumb Screws Zinc Plated Metric Knurled Head Bolts Grip Knobs Hand Tighten Thread Fasteners, 20 Pcs(Disclaimer)

Product description

• These knurled thumb screws offer a versatile fastening solution for restoring lighting fixtures, lampshades, furniture, industrial machinery, home appliances, electronic devices, and various other applications requiring manual adjustment.
• Their textured grip design ensures aesthetic appeal and practical functionality across repairs, renovations, and professional maintenance tasks.
• This pack includes 20 pieces of M3x4mm knurled thumb screws, crafted from durable carbon steel material. Each screw has a 11mm / 0.43" head diameter and 3.7mm / 0.15" head thickness, offering a robust clamping force.
• The thread pitch is 0.5mm / 0.02". The knurled surface ensures a non-slip grip, while the surface zinc plating treatment finish adds corrosion resistance and a professional look.
• These screws are made of quality metal with black zinc plated cover, which has higher corrosion resistance and anti-rust effect than ordinary screws, prolonged lifespan, are not easy to damage, and are more solid; Featuring a knurled texture on the head, these screws provide enhanced grip for easy hand-tightening, eliminating the need for tools.
• The flat head design ensures a flush, secure fit, making them good for applications requiring a sleek appearance.
• Simply grip the knurled head and rotate by hand to tighten or loosen. The textured surface provides a secure hold, even in tight spaces.
• Use them to fasten components in appliances, instruments, or DIY projects where quick, tool-free adjustments are needed. Please confirm the thread size. For optimal performance, avoid over-tightening, which could stress the threads.