Need Self-Drilling Screws That Resist Corrosion in High-Humidity Appliance Environments?

Our 410SS flat head drilling screws with black zinc plating and beeswax finish provide superior corrosion resistance for washing machines, refrigerators, and HVAC units. The self-drilling tail eliminates pre-drilling, reducing assembly time by 40%. ISO-compliant manufacturing ensures consistent quality with full plating reports. Contact us for samples tested to your specific salt spray requirements.

With 45 years of manufacturing expertise and ISO working instruction compliance, we ensure each drilling screw meets exacting quality standards through comprehensive measurement protocols covering 12+ critical inspection points. Our heat treatment, acid washing, and passivation sequence delivers optimal mechanical properties and surface finish, while plating reports provide full material traceability. These coating screws are ideal for applications requiring self-drilling capability combined with superior corrosion protection, serving OEM manufacturers across automotive, electronics, HVAC, and industrial equipment sectors with reliable, salt spray tested fastening solutions.