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GRK Fasteners R4 01105 Decking and Framing Screw, #9 Thread, 3-1/8 in L, W-Cut Thread, Flat Head, Star Drive, Steel
SCREW M/P FRAME/DECK 9X3-1/8IN
 
Our Price: $100.39


Product Code: 7212418
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Description Extended Information
 
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.