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R4 01143 Framing and Decking Screw

GRK Fasteners R4 01143 Framing and Decking Screw

Price $68.99
This item is currently available online only.
GRK's R4 self-countersinking screw has a patented underhead with saw-blade like cutting teeth and six self-contained cutting pockets. Together they act similar to a circular saw-blade, transporting the drill dust away from the edge of the screw hole while cutting a perfectly clean hole into even the most brittle materials without cracking any surface treatment. This design enhances the R4's versatility by allowing the fastener to countersink into even the hardest woods. The head of the screw closes the hole off with precision leaving no damaged fibers around the head. R4 screws 2 in and longer have a four threaded CEE thread. This enlarges the screw hole for the non-threaded portion of the fastener, allowing the wood to settle easily. It increases the screw's drawing strength and reduces the friction on the screw shank that lowers the driving torque.

  • 4-3/4 in L
  • W-Cut Thread
  • Recessed Star Drive
  • Zip-Tip Point
  • Steel
  • Recessed star drive for zero stripping, with six points of contact
  • CEE THREAD enlarges hole to reduce splitting
  • W-CUT for low torque, faster drive
  • ZIP-TIP ensures no pre-drilling and faster penetration
  • Cutting pockets provide a clean hole, reduces splitting and bore with precision
  • Case hardened steel for high tensile, torque and shear strength
  • Climatek coating is AC257 code approved for use in treated lumber

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Proposition 65 Warnings! 

Note: These warnings do not apply to food products.

 WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate, which are known to the State of California to cause cancer and birth defects or other reproductive harm.

 WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm.  For more information go to www.P65Warnings.ca.gov.