500 Pack - #10-16 x 1-1/2" Wafer, Quad, With #3 Tek Point, Self Drilling Screw-Zinc Plated

500 Pack - 10-16 x 1 1/2 Wafer, Quad, With #3 Tek Point, Self Drilling Screw, Course Thread (Type BSD), Cr6+ Zinc Plated, #2 Quad Recess, Fully Threaded