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ITW GRK Fasteners 12217 RSS Rugged Structural Screws 5/16 Inch By 2-1/2 Inch Washer Head 100 Pack: Exterior Structural & Truss Head Screws (772691122179-1)
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RSS™ Rugged Structural - GRK Fasteners
GRK RSS-185 10 by 3-1/8-Inch Structural Screws, 50 Screws per Package - 772691121370 : Amazon.co.uk: DIY & Tools