Sealtite Maxx Steelbinder screws are self-drilling pole barn screws designed to attach metal roof and sidewall panels on pre-engineered metal buildings. Coated screws feature a tough 2.5 mils of powder coating that will not chalk or fade due to the UV inhibitor in all colored coatings. Stitch screws are designed specifically to fasten overlapping panels together and these 1/4" stitch screws will securely fasten 2 layers of 26 Gauge panels with no strip-out. The cupped head encapsulates the EPDM rubber washer to provide a secure seal even when driven at an angle.