304 stainless steel round head with pad nickel plated self tapping screw M4X40(100pcs)

This 304 stainless steel round head nickel-plated self-tapping screw is specially designed for metal fixing,Made of 304 stainless steel with excellent corrosion resistance and mechanical strength. The nickel-plated surface treatment further improves the anti-rust performance and is suitable for long-term exposure to humid or corrosive environments. Round head design with gasket, after installation surface is flat without bulge, effectively protect the fixed material surface is not scratched. Self-tapping thread structure can be directly screwed into the metal plate,No need to punch in advance, convenient and efficient operation. Widely used in metal furniture, electronic equipment, industrial machinery, home appliance maintenance and other fields, it is an ideal choice for professional installation and DIY projects.