8-15 x 3/8 Square Pan Self Tapping Screw Type A Fully Threaded Zinc 5/16-18-.200 It features a metric thread

It features a metric thread size of M5

while its 1/2-inch length provides ample grip for secure fastening

This 1/4-20 x 1 Phillips pan machine screw is made of 410 stainless steel

Their plain finish offers a clean and professional appearance

8-15 x 3/8 Square Pan Self Tapping Screw Type A Fully Threaded Zinc 5/16-18-.200 It features a metric threadThese 8 15 x 3 8 square pan self tapping screws are Type A screws, meaning they have a fully threaded body. They are made of steel and have a zinc coating for corrosion resistance. These screws are designed to be driven into metal without the need for a pre drilled hole. They are commonly used in a variety of applications, including metal roofing, siding, and HVAC.