Hex head self drilling screws are fasteners that have a drill point which enables users to drill them directly into material without having to pre-drill a hole. The EPDM washer under the head provides a consistent weather-tight seal. In addition to the standard tek points, certain sizes are available in a #1 stitch point for lap joints on metal roofing, or a #5 point for thicker material up to 1/2" thick. These fasteners are available with a long life coating, and in conjunction with the bonded sealing washer these screws are commonly used for metal roofing installation.
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