TimberLOK® Heavy Duty Wood Screws are designed with shear values stronger than 3/8 inch lag screws. The sharp point and aggressive thread angle penetrate the densest woods without pre-drilling. A uniquely tapered head countersinks easily into wood for a sharp flush appearance. TimberLOK® screws come with a proprietary three-step Xylan® coating process that protects against corrosion, even in pressure treated wood. TimberLOK® screws are ACQ approved. #14 diameter shank.

HeadLOK® is a heavy duty wood screw that does it all and won't countersink. HeadLOK® offers higher design shear than 3/8" lag screws and no pre-drilling is needed. HeadLOK® zips right in and is ideal for many wood-to-wood applications including decks, fences, SIPs, kitchen cabinets and more.

LedgerLOK® is the first fastener engineered to attach deck ledger boards to a wooden house structure with no pre-drilling. LedgerLOK® is approved in ACQ pressure treated lumber. The built-in washer head eliminates the need for an additional washer, saving time and money. #14 diameter shank.

ThruLOK® is the newest edition to the FastenMaster LOK Line of structural wood-to-wood fasteners. ThruLOK® offers the speed of a LOK Line product and the strength of a through-bolted connection. ThruLOK® is a three-part assembly including a ThruLOK® fastener featuring the patent-pending Paddle Point, engineered washer and LOK-Nut.

The TrussLOK® Engineered Wood Fastener is designed for joining multi-ply LVL, LSL and PSL. This fastener was developed with direct input from a leader in engineered wood, Trus Joist®. TrussLOK® is faster, easier and stronger than through-bolts and other structural self-drilling fasteners with similar diameters. TrussLOK® is approved for single-sided installation unlike nails and other screws of similar diameter that need to be installed from both sides. #14 diameter shank.

TrussLOK-Z® are engineered for joining two, three and four-ply girder trusses. TrussLOK-Z® require no pre-drilling and are engineered for single-sided installation. The thread length is correct for dimensional lumber, eliminating board jacking and pulling trusses together during installation. TrussLOK-Z® can also be used with 1 1/2" thick LSL and LVL truss chords. #14 diameter shank.