Metallics QTEKD17V 10 x 5/8 in. 5/16 Head Quadrive Self-Drilling & Tapping Screws - #2 Drill Point - Domestic Steel Zinc - Each

The QTEKD17V carries a #2 drill point, which is the point used for light to medium gauge steel such as metal studs, hat channel, strut and sheet metal. At 5/8 inch overall length with a #10 diameter, the drilled portion plus thread has to clear whatever you are fastening through, so it suits thin material attachments like clips, straps and box mounting rather than thick bar or plate.

Yes. The QTEKD17V is domestic steel and made in the USA, which is what procurement officers on federally funded and institutional work usually need confirmed before a fastener gets approved.

No. It is a self-drilling and self-tapping screw, so the drill point cuts the hole and the threads form their own mating thread in one pass. Run it with a screw gun or impact driver at a steady speed and let the point do the cutting.

The 5/16 head takes a 5/16 inch hex driver, and the Quadrive design also accepts a square (Robertson) drive bit in the same head. That means one screw can be run with a hex socket in a screw gun or with a square bit where a socket will not reach into a tight corner.

That is the common use for it. A #10 diameter gives more thread engagement and pull-out strength than a #8, and 5/8 inch is long enough to pass through a box ear or strap and still thread into the stud face without the tip poking far out the back. Longer lengths are only needed when you are fastening through thicker standoffs or furring.

Material is domestic steel with a zinc plating. Zinc gives corrosion resistance for indoor and protected applications, which is where most electrical rough-in work happens. For sustained outdoor exposure or washdown areas, a stainless or hot dip fastener is the better call.

Order it as Metallics QTEKD17V. That number covers the #10 by 5/8 inch screw with the 5/16 Quadrive head and the #2 drill point in zinc plated domestic steel.