MECCANIXITY 20pcs M3 x 4mm Knurled Thumb Screws, Black Steel Flat Head Thumb Screws Metric Knurled Bolts with Shoulder Grip Knobs Hand Tighten Thread Fasteners
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 M3x20mm knurled thumb screws, crafted from durable carbon steel material. Each screw has a 11mm / 0.43" head diameter and 7mm / 0.28" head thickness, offering a robust clamping force. The thread pitch is 0.5mm / 0.02". The flat head thickness is 2.8mm / 0.11", and the column end diameter is 6mm / 0.24". The knurled surface ensures a non-slip grip.
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.
The shoulder head provides a larger contact surface, which can help you tighten or loosen it more easily. 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.
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