R4 MULTIPURPOSE SCREW 10" X 3-1/8" 1500/BOX
1_1103625 MFG #: 09G1528
$0.00 / BOX
The 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.