For many years, the industry
standard wood preservative has been CCA (Chromated Copper Arsenate).
Effective January 1st, 2004, the pressure treated wood industry voluntarily
agreed to remove arsenic from the wood treating process. Internal and
independent testing has proven that the “new” pressure treated wood
formulations (Alkaline Copper Quaternary - ACQ, Copper Azole, etc.) are more
corrosive to fasteners
Bostitch recognizes the need to offer fastener solutions to address code
official requirements, wood manufacturers recommendations, and most of all,
construction professionals concerns. For the most extreme corrosive
environments, stainless steel fasteners are the best recommendation.
Bostitch currently offers grade 304 stainless steel fasteners in all types
of collation. For fasteners used with the new pressure treated wood in less
corrosive environments, Bostitch has you covered.
For our full line of wire-welded stick and coil nails, Bostitch introduces
THICKCOAT™ galvanization. This new technology in galvanization was designed
specifically to protect against today’s more corrosive pressure treated
lumber. This new coating technology uses an enhanced electro-galvanization
process to apply more than 2˝ times the amount of zinc than conventional
electro-plating. Coupled with this dense zinc coating is a rust-resistant
chromate overcoat. AWPA E-12 laboratory testing has shown that THICKCOAT™
galvanized fasteners corrode at approximately half the rate of our leading
For plastic collated round head strip nails, Bostitch offers a full line of
Hot Dipped Galvanized nails. Our Hot Dipped Galvanized nails meet or exceed
ASTM A153 zinc weight specification. This ensures a thick zinc coating to
provide superior corrosion resistance.
Bostitch continues to conduct the most extensive corrosion testing of
fasteners in the industry. Our testing is conducted in accordance with the
ASTM B117 or AWPA E-12 specifications. This testing is what gives us the
confidence to recommend our stainless steel, Thickcoat™ galvanized and hot
dipped galvanized fasteners for use in the new pressure treated wood.