Lag screws are fairly inexpensive, which is a bonus. But be sure to get stainless steel or hot-dipped galvanized screws for optimal performance. You can invest a little bit more to get lag screws that require no pre-drilled holes. These special lag screws often have washers attached to their heads.
The last time I used PT wood the formula was different so I'm not sure if the requirements for the hardware changed also.
Shop our selection of Lag Bolts in the Hardware Department at The Home Depot.
And when water contacts ACQ- or CA-treated wood, it lifts copper ions from the. . style of polymer-coated, thinner-diameter, self-drilling lag screws (Figure 7) .
Although existing stocks of CCA treated lumber continued to be sold, all pressure treated lumber manu-. . dipped galvanized lag screw approved for ACQ.
Mechanically galvanized screws are generally suitable for decks and other outdoor projects made of pressure-treated lumber. Nevertheless, you should not use .
High-strength structural screws are beginning to displace traditional lag bolts. GRK is a premium screw available only at contractor-oriented lumberyards and online.. Structural fasteners are made from stronger steel and are heat-treated for .