Nails and screws are intended to resist two types of loads: shear and withdrawal. The sharp threads and points bite instantly into the material (including hardwood), reducing the splitting effect due to smaller shanks. 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? Thanks The sizes I've been comparing are GRK #9 x 3-1/8'' to SPAX #9 x 3-1/4''. R4™ screws 2" and longer have a four threaded CEE Thread. R4™ Multi-Purpose Framing Screws Frame with Ease and Confidence DRIVE WITH SPEED, QUALITY & CONFIDENCE Code Approved for Structural Application Case Hardened Steel High Tensile, Torque and Shear Strength Climatek™Coating is AC257 Code Approved for use in Treated Lumber Cutting Pockets provide a clean hole and reduces splitting, and bore Skip to main content.in Hello, Sign in. The material I've been driving them into have been Douglas Fir 2 x … GRK's RSS (TM) Rugged Structural Screw is made of specially hardened steel to provide you with high tensile, torque, and shear strength. Star Drive Washer Head RSS Structural Screws (50-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. Less expensive and easier to use than lag-screws, the code-compliant self-tapping hardened steel screws offer great grip, shear-strength, and torque. Skip to main content.sg. 5/16 in. Recessed Star Drive: Zero Stripping with 6 points of contact This feature also increases the screw's drawing strength and reduces friction on the screw shank that lowers driving torque. Home centers carry the most commonly used structural screw styles and sizes, but usually only one brand. 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. Shear is the force that wants to slide the pieces being joined. Structural screws meet stringent engineering standards. I've been doing some extensive testing of both brands. 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 Account & Lists Account Returns & … The screws are Climatek coated ACQ-AC257 approved for use with pressure-treated wood, cedar, and redwood. GRK R4 HandyPak Multipurpose Screws, 10 by 4-3/4-Inch, 50-Count: Amazon.sg: Home Improvement. ... High tensile torque and shear strength (5/16" diameter screw equivalent to 1/2" lag bolt) Structural screws aren’t cheap: they generally cost several times more than an equivalent lag screw. No pre-drilling is required! Frame with ease and confidence. GRK’s Trim™ Head screws are an excellent choice for most fine carpentry applications, as well as window extension jambs and more. Spax and GRK screws usually come packaged with a Torx T20 or T25 bit. GRK Fasteners GRK 01075 R4 Pro-Pak Multi-Purpose Framing Screw, #8 x 1-3/4", 925-Count. The sharp threads and points on the RSS screws instantly bite into the materials, reducing any splitting effect generally caused by smaller shanks. Case Hardened Steel: for high tensile, torque and shear strength. 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. Description; click to zoom. 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. #10 x 3-1/8 in. GRK 62225 RSS PHEINOX 305SS HandyPak 5/16-inch by 4-inch Structural Screws, (45 per Pack): Amazon.sg: Home Improvement 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. I've been comparing GRK R4 screws to SPAX T-STAR PLUS Flat Head Multi-Material Construction Screws. For interior/exterior use Available in Climatek™ or white powder coated finish Also available in: PHEINOX™ 305 grade Stainless Steel. The prefabricated panels used to build Zero House rely on GRK fasteners in many locations:. 10 x 4" GRK R4™ Flat Head Climatek™ Finish T-25 Drive Steel Multi-Purpose Exterior Wood Screw. GRK RSS Rugged Structural Screw has a patented design and made of specially hardened steel to provide customers with high tensile, torque and shear strength. The sharp threads and points bite instantly into Simpson Strong Tie advertises that their #9 and #10 SD Connector screws are code approved as a substitute for 10d and 16d, respectively. This enlarges the screw hole for the non-threaded portion of the fastener, allowing the wood to settle easily. These screws are made of case-hardened steel for a very high tensile, torque and shear strength. All Hello, Sign in. GRK's RSS Rugged Structural Rugged Structural Screw is made of specially hardened steel to provide you with high tensile, torque and shear strength. GRK structural screws. Made of Specially Hardened Steel to provide High Tensile, Torque and Shear strength. GRK Fasteners R4 Multi Purpose Screws feature: ... CEE thread on the shaft of 2″ and longer R4 screws enlarge the screw hole allowing wood to settle easily and increases the drawing strength; Excellent for working with cement fibre board and metal studs; Additional information. The RSS (Rugged Structural Screws) hold the corners of the prefab panels together, providing a strong connection that draws the top and side plates together reliably and offer the shear strength and pull strength to keep the panels together. Features. 30 day satisfaction guarantee. 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. The RSS screw is made of specially hardened steel to provide you with high tensile, torque and shear strength. Buy your GRK Fasteners 02101 #9 x 2-1/2" R4 Multi Purpose Screw at burnstools.com. x 6 in. Climatek coating ensures superior resistance to corrosion and chemicals, which is ideal for use on treated wood. This design enhances the R4's versatility by allowing the fastener to countersink into even the hardest woods. Comes in a … Try. No pre-drilling is required! The sharp threads and points bite instantly into the material (including hardwood), reducing the splitting effect due to smaller shanks. From looking at Simpson's ESR 3046 certification (ditto on the link), it appears that in #9 GRK beats #9 Simpson in shear (428 to 425) and tensile (627 to 510) strength. The sharp threads and points bite instantly into the material (including hardwood), reducing the splitting effect due to smaller shanks. GRK Fasteners' R4™ screws measuring 2" and longer have a four-thread CEE Thread. Multi-use screw for wood, particle board, sheet metal, cement fibre board, laminate and wood decking and melamine. R4™ screws 2″ and longer have a four-threaded CEE Thread. The sharp threads and points bite instantly into the material (including hardwood), reducing the splitting effect due to smaller shanks. Interior and Exterior; Designed for Ledger Board, Retaining Walls and Timber Framing; GRK RSS10318-5 RSS ProPak 10 by 3-1/8-Inch Structural Screws, 236 Screws per Pail From the Manufacturer. Add to wish list. GRK Multi-Purpose Screws - 3/8" x 4" - 50/Box. Shop Your Way; Pinterest; Email add to registry. The sharp threads and points bite instantly into material, including hardwood, reducing the splitting effect due to smaller shanks. ... 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. GRK’s RSS™ screw is made of specially hardened steel to provide you with high tensile, torque, and shear strength. Description Additional information Reviews (2) Description GRK Fasteners RSS Screw – Rugged Structural Screw. 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. GRK's RSS screw is made of specially hardened steel to provide you with tensile, torque and shear strength. drive through the joist into the railing post to secure it in place. Where are GRK Fasteners used in Zero House? RSS - GRK. GRK RSS Rugged Structural Screw has a patented design and made of specially hardened steel to provide customers with high tensile, torque and shear strength. GRK Fasteners' RSS™ Rugged Structural Screw is made of specially hardened steel to provide you with the highest tensile, torque and shear strength available. They'll do a lot better in pull-out strength than a flat-head wood screw, though, due to the much larger surface area of the head. It increases the screw's drawing strength and reduces the friction on the screw shank that lowers the driving torque. Prime Cart. GRK RSS Structural Screws. This feature enlarges the screw hole for the non-threaded portion of the fastener, making it easy for the wood to settle. SKU: N/A Categories: Fasteners, GRK Fasteners, Screws. They are self tapping eliminating pre-drilling featuring a countersinking head with cutting teeth, W-Cut™ for reducing splitting, CEE Thread™ for no splitting, reducing install torque and our Climatek™ AC257 code approved coating. Account & Lists Returns & Orders. R4™ Multi-Purpose Framing Screws are used for wood, plastic, cement fiber board, particle board, sheet metal, wood decking and melamine. This enlarges the screw hole for the non-threaded portion of the fastener, allowing the wood to settle. GRK 772691001054 R4 Bulk Number-9 by 3-1/8-Inch Screw: Amazon.in: Home Improvement. Hardened, high-quality, heat-treated steel means virtually no chance of shear-offs. It increases the screw’s drawing strength and reduces the friction on the screw shank which in turn lowers the driving torque. And melamine R4 Bulk Number-9 by 3-1/8-Inch structural screws, 236 screws per Pail From Manufacturer... No chance of shear-offs: N/A Categories: Fasteners, screws sku: Categories... Even the hardest woods Available in: PHEINOX™ 305 grade Stainless Steel Email add to registry screw. Screw – Rugged structural screw styles and sizes, but usually only one brand this design the! 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