GRK Fasteners R4 121050 Screw, #9 Thread, 3-1/8 in L, Bugle Head, Star Drive, Self-Drilling, Self-Tapping Point, Steel Audio & Video Supplies (1) 1/4-20 Size Tap and

(1) 1/4-20 Size Tap and Drill Bits

extreme weather exposure and both on and off-road applications

we'll fix it for free

acrylics or artificial colors used to make traditional fiberglass insulation

GRK Fasteners R4 121050 Screw, #9 Thread, 3-1/8 in L, Bugle Head, Star Drive, Self-Drilling, Self-Tapping Point, Steel Audio & Video Supplies (1) 1/4-20 Size Tap andGRK's R4 self countersinking screw has a patented under head 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 an ideally 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