5/16" X 4" RSS SCREWS BY GRK FASTENERS
$0.95
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RSS Structural Screws by GRK are an easy to use lag screw alternative and work for numerous construction applications, including many of the tree house brackets on www.treehousesupplies.com. They also work well for the tops of tribeams and knee braces. We sell them each, in packs of 100 and packs of 400. ACQ Compatible - good for treated wood products. 5/16"" screw shaft Aggressive threading really grabs & draws materials together Capped head acts like a small built in washer Fits many of the brackets on our website. Requires T-30 bit
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