Big Timber #15 x 3 In. Structure Screw (500 Ct.)

Structural lag screws feature heat-treated hardened steel for high tensile strength and high shear strength. They have triple layer ACQ compatible bronze coating for exterior or interior use. For use in log construction, timber frames, laminated beams, girders, ledger boards, stair rails, deck posts, fencing, SIP panels, and pole barns.