The RSS screw is made of specially hardened steel to provide you with high tensile, torque and shear strength. Also, it's worth pointing out that the GRK cabinet screws aren't "skinny"...they're of a particular size (#8) and will match any other #8 of the same quality in shear strength. Home centers carry the most commonly used structural screw styles and sizes, but usually only one brand. Simpson Strong Tie advertises that their #9 and #10 SD Connector screws are code approved as a substitute for 10d and 16d, respectively. GRK's RSS Rugged Structural Rugged Structural Screw is made of specially hardened steel to provide you with high tensile, torque and shear strength. ... R4™ Climatek™ Zip Tip ™ W-Cut™ ... for high tensile, torque and shear strength; For interior/exterior use: in wood, plastic, cement fiber board, sheet metal, wood decking and melamine. Buy your GRK Fasteners 02101 #9 x 2-1/2" R4 Multi Purpose Screw at burnstools.com. Skip to main content.in Hello, Sign in. This enlarges the screw hole for the non-threaded portion of the fastener, allowing the wood to settle. Features. GRK® RSS™ 5/16" x ... RSS™ rugged structural screws is a line of screws made of an extremely high-quality carbon steel that provides high tensile torque and shea strength. GRK Multi-Purpose Screws - 3/8" x 4" - 50/Box. Star Drive Washer Head RSS Structural Screws (300-Pack) GRK RSS Rugged Structural Screw has a patented GRK RSS Rugged Structural Screw has a patented design and made of especially hardened steel to provide customers with high tensile, torque and shear strength. These screws are made of case-hardened steel for a very high tensile, torque and shear strength. GRK 772691001054 R4 Bulk Number-9 by 3-1/8-Inch Screw: Amazon.in: Home Improvement. I've been doing some extensive testing of both brands. Diameter with threads excluded from the shear plane = 0.164" Radius = 0.082" Area in shear plane = pi x radius ^ 2 = 0.0211 square inches x 36,000 psi = 760 psi ultimate strength Fv = 0.22 Fu (coeficient used for bolts according to manual for steel construction - AISC 9th edition) Fv = 167 lbs shear strength Am I way off in my thinking? Shear Strength Approved for use in RECESSED STAR DRIVE ZIP-TIP™ CEE THREAD™ W-CUT™ C M Y CM MY CY CMY K R4.pdf 1 2014-12-19 10:09 AM. RSS - GRK. Shop GRK R4 #10 x 3-1/8-in Climatek-coated Stainless Steel Round Interior/Exterior Wood Screws (1500-Count)undefined at Lowe's.com. GRK R4 ProPak Multipurpose Screws, 8 by 1-1/4-Inch, 1,300-Count (772691010698) GRK 103101#9 by 2-1/2-inch Star Drive Bugle Head R4 Multi-Purpose Screw, Steel (Pack of 100) Power Pro Available Hillman 48594 Premium Exterior Wood Screw, 8 X 1 1/4-Inch, 1 Pound, 8 x 1-1/4", Epoxy Coated Bronze Shop Your Way; Pinterest; Email add to registry. R4™ screws 2″ and longer have a four-threaded CEE Thread. The sharp threads and points on the RSS screws instantly bite into the materials, reducing any splitting effect generally caused by smaller shanks. R4™ Multi-Purpose Framing Screws are used for wood, plastic, cement fiber board, particle board, sheet metal, wood decking and melamine. For interior/exterior use Available in Climatek™ or white powder coated finish Also available in: PHEINOX™ 305 grade Stainless Steel. Interior and Exterior; Designed for Ledger Board, Retaining Walls and Timber Framing; I've been comparing GRK R4 screws to SPAX T-STAR PLUS Flat Head Multi-Material Construction Screws. SKU: N/A Categories: Fasteners, GRK Fasteners, Screws. All Hello, Sign in. GRK's RSS (TM) Rugged Structural Screw is made of specially hardened steel to provide you with high tensile, torque, and shear strength. No pre-drilling is required! drive through the joist into the railing post to secure it in place. 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