Tek 1 screw is 1/4"x14x1" with 5/16" unpainted hex head.
Seam Lok and Snap Seal roof system applications use these screws for attaching inside closures to eave plate or eave strut.
General applications use these screws to attach various angles and banding to secondary framing. Also used to attach clips to framed opening connections.
Tek 5 is 1/4"x14x1-1/4" with 5/16" unpainted hex head. These screws are used to attach various materials to structural members up to 1/2" thick.