GRK 5/16-in x 3-1/8-in Polymer Exterior Wood Screws (45-Per Box) in the Wood Screws department at Lowes.com
GRK – Fasteners & Deck Screws - DecksDirect
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)
RSS™ Rugged Structural - GRK Fasteners
GRK Fasteners 5/16 in. x 3-1/8 in. Star Drive Washer Head Rugged Structural Wood Screw (45-Pack) 112221 - The Home Depot
GRK Fasteners 1/4 in. x 2 in. Star Drive Low Profile Washer Head RSS Structural Alternative Lag Screws (50-Pack) 12155 - The Home Depot
Grk Fasteners 300 Pack 5/16"x6" RSS Climatek Star Drive Structural Screws | Home Hardware
GRK RSS10318HP RSS HandyPak 10 by 3-1/8-Inch Structural Screws, 50 Screws per Package : Amazon.ca: Tools & Home Improvement
GRK RSS516312HP RSS HandyPak 5/16 by 3-1/2-Inch Structural Screws, 100 Screws per Package : Amazon.ca: Tools & Home Improvement
Structural Screws vs. Lag Bolts Screws (DIY) | Family Handyman
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
GRK ICC-ESR-2442 HandyPak 5/16 by 4-Inch Structural Screws, 100 Screws per | eBay