These pan head sharp point tapping screws cut their own threads into a material and do not require a pilot hole unless fastening metal.
Metallics FS24C812 Side Mount Conduit to Flange C
https://nsiindustries.com/product/side-mount-conduit-to-flange-c-2/
Side Mount Conduit to Flange C
Metallics TS5812D Anchors 5/8 x 12 Wdg St-zn (Box 25)
https://nsiindustries.com/product/anchors-5-8-x-12-wdg-st-zn-box-25/
Anchors 5/8 x 12 Wdg St-zn (Box 25)
Metallics SBN145M Nut 1/4-20 Hex M/S Nut S/B (5000pcs)
https://nsiindustries.com/product/nut-1-4-20-hex-m-s-nut-s-b-5000pcs/
Nut 1/4-20 Hex M/S Nut S/B (5000pcs)
Metallics R122 Washers 2-1/2 X 4 Reducing Ele (Box 10)
https://nsiindustries.com/product/washers-2-1-2-x-4-reducing-ele-box-10/
Washers 2-1/2 X 4 Reducing Ele (Box 10)
Metallics QCSH10 Anchors 1/4X1-1/4 Qdr Concrete Screw (Jar100)
https://nsiindustries.com/product/anchors-1-4x1-1-4-qdr-concrete-screw-jar100/
Metallics MBR125B Bridle Ring 1-1/4 IN Ms St-zn (Bag 25)
https://nsiindustries.com/product/bridle-ring-1-1-4-ms-st-zn-bag-25/
Bridle Ring 1-1/4″ Ms St-zn (Bag 25)
Metallics SBH987 Bolts 3/4-10 X 5 Hxbt SS (Box 10)
https://nsiindustries.com/product/bolts-3-4-10-x-5-hxbt-ss-box-10/
Bolts 3/4-10 X 5 Hxbt SS (Box 10)
Metallics TS34851SSD Anchors 50 3/4 x 8-1/2 Wdg SS (Box 10)
https://nsiindustries.com/product/anchors-50-3-4-x-8-1-2-wdg-ss-box-10/
Anchors 50 3/4 x 8-1/2 Wdg SS (Box 10)
These truss head combo screws are extra-long making them perfect for electrical box installations. With a combo drive, these fasteners can be used with slotted and Phillips screwdrivers and drill bits.