The New Driving Force in the Fastener Industry! Based in Thunder Bay, On, U2 fasteners is led by President Uli Walther former founder of GRK Fasteners. Premium fasteners! U2 fasteners offers: Universal screw - Ideal for replacing those old deck screws. The Universal screw’s features work together to drive and secure this screw in many types of materials that are used in residential construction. Construction Screw – Next generation of construction screws that are replacing lag screws. Cap Screw - Ideal light duty interior and exterior screw. This screw makes all your small projects easier with the drawdown strength of the head and the clean finish. Fine Screw - The Fine screw is designed especially for carpenters who do ‘fine’ professional work. With its slim shank and bulging thread this screw can be used without damaging even the hardest wood.