At deckexpressions.com we offer the FastenMaster LOK LINE. A collection of structural wood-to-wood screws used by contractors and homeowners nationwide. The Lok Line meets all codes. Every structural connection highlighted by FastenMaster has been fully tested, reviewed by code officials and supported by a technical bulletin showing code compliance.LOK LINE Fasteners require no predrilling, which means installed cost goes down while structural integrity goes up. We offer the Ledger Lok, Timber Lok, Truss Lok, Head Lok, and the Thru Lok.