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FASTENER AND HARDWARE
INFORMATION SHEET
For interior or exterior applications
Use fasteners and hardware that are in
compliance with the manufacturer’s
recommendations and the building codes for
their intended use. As with any good design and
construction practices, treated wood should not
be used in applications where trapped moisture
or water can occur. Where design and/or actual
conditions allow for constant, repetitive or long
periods of wet conditions, only stainless steel
fasteners should be used.
For exterior applications
The following minimum galvanization levels may
be used for connectors, joist hangers,
fasteners and other hardware that are placed in
direct contact with exterior applications of
micronized copper treated wood:
• Fasteners - nails, screws, etc.
ASTM – A 153 (1 oz/ft²)
• Hardware - connectors, joist hangers, etc.
ASTM – A 653 G90 (0.90 oz/ft²)
The effects of other building materials within a
given assembly, along with environmental factors,
should also be considered when selecting the
appropriate hardware and fasteners to use for a
given project containing treated wood.
Stainless Steel fasteners and hardware are
required for Permanent Wood Foundations below
grade and are recommended for use with treated
wood in other severe exterior applications such as
swimming pools, salt water exposure, etc. - Type
304 and 316 are recommended grades to use.
Aluminum building products may be placed in
direct contact with YellaWood®brand products
used for interior uses and above ground exterior
applications such as decks, fencing, and
landscaping projects. Examples of aluminum
products include siding, roofing, gutters, door and
window trim, flashing, nails, fasteners and other
hardware connectors. However, direct contact of
treated products and aluminum building products
should be limited to code-compliant construction
applications that provide proper water drainage
and do not allow the wood to be exposed to
standing water or water immersion.
We recommend you contact the aluminum
building products manufacturer for its
recommendations regarding use of its aluminum
products in contact with treated wood in ground
contact applications or when exposed to salt
water, brackish water, or chlorinated water, such as
swimming pools or hot tubs.
Also check with the aluminum building products
manufacturer regarding compatibility with other
chemicals and cleaning agents and the use of their
aluminum products in commercial, industrial, and
specialty applications such as boat construction.
YellaWood®brand pressure treated products
are treated with copper and other preservatives
(the “Preservatives”) and preservative methods,
systems, and technologies of unrelated third
parties. For details regarding the Preservatives,
methods, systems, and technologies used by
Great Southern Wood Preserving, Incorporated,
see http://www.greatsouthernwood.com/products/
yellawood or write us at P.O. Box 610, Abbeville,
AL 36310. Ask dealer for warranty details or visit
http://www.greatsouthernwood.com/products/
warranties. For important handling and other
information concerning our products or for a
copy of the YellaWood®brand Safety Data Sheet
(SDS), please visit us at www.greatsouthernwood.
com or write us at P.O. Box 610, Abbeville, AL
36310. YellaWood®and the yellow tag are federally
registered trademarks of Great Southern Wood
Preserving, Incorporated.
Great Southern Wood Preserving, Incorporated
makes no warranties expressed or implied as to the
fitness for a particular purpose of this plan.