Which Trailer Floor and Wall Screws are the Best Recommendation for Rust Resistance

Question:

You have two types of flooring bolts: regular black oxide? and ACQ-treated. I realize the ACQ is for pressure-treated wood, but would it also offer better rusting resistance vs. the regular type?

asked by: Kian

Expert Reply:

I would recommend to use the treated torx screws for ACQ treated wood for better corrosion and rust resistance. The treated torx screws like the Redline 2-1/2 Inch Long Torx Trailer Screw for ACQ Treated Wood, part # TFX250ACQ, are plated with a material that will resist the ACQ preservative which is very corrosive because of the high levels of copper it contains. When using ACQ timber it is necessary to use double-galvanized or stainless steel fasteners.

The plating material used on the treated torx screws is said to be comparable to stainless steel as far as rust resistance, but less expensive.

expert reply by: Jeff D