Sealtite Eclipse Woodbinder screws are self-drilling pole barn screws designed to attach metal roofing & siding to wood purlins on post-frame & residential metal roof applications. The eclipse screw features a truss head that utilizes a T-25W 6 lobe driver to create a low profile appearance on sidewall applications. 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. Type 17 drill point quickly penetrates steel siding and eliminates metal shaving that can embed themselves in the rubber washer. The undercut EPDM rubber washer provides a secure seal even when driven at an angle.