Kreg SML-F125S5-100 Pocket-Hole Screw, #7 Thread, 1-1/4 in L, Fine Thread, Maxi-Loc Head, Square Drive, Sharp Point

Kreg stainless screws are specially designed for maritime applications, excessive exposure to water and other exceedingly corrosive environments, such as ACQ-treated lumber. If you're looking for the excellent in rust-prevention, this is your solution.