Blue-Kote™ Screws feature three anti-corrosion layers, making them the perfect choice for a wide variety of indoor and outdoor projects. Blue-Kote™ Screws provide rust-resistance up to 400% greater than zinc-plated screws and work with pressure-treated material.
#8 - All SML coarse-threaded screws (with the exception of stainless).
#7 - All SML fine-threaded screws and all SPS coarse-threaded screws
#6 - All SPS fine-threaded screws.