Metallics QTEKD19 10 x 1-1/2 in. 5/16 Head Quadrive Self-Drilling & Tapping Screws - #2 Drill Point - Domestic Steel Zinc - Each

A #2 drill point is the light-gauge point. It drills and taps its own hole in thin steel, the kind of metal stud, hat channel, and light framing an electrical or drywall crew works with daily. The Metallics QTEKD19 carries that #2 point, so no pilot hole and no pre-tapping. For heavy structural steel you want a higher point number with a longer flute.

Two options, which is the point of the Quadrive head. It takes a #2 square (Robertson) bit, and the 5/16 inch hex head lets you run it with a 5/16 nut driver or magnetic hex socket instead. On overhead or one-handed work most installers reach for the 5/16 hex socket because it holds the screw without a magnet.

Metallics lists the QTEKD19 as Made in the USA from domestic steel. That is the reason to spec this one over an import Tek screw on government, military, or federally funded work where the fastener has to carry domestic origin. Submit the manufacturer's own documentation with your package.

The QTEKD19 is zinc plated domestic steel. Zinc plating handles dry interior and protected locations well. For direct weather exposure, coastal air, or contact with treated lumber, step up to a hot-dip galvanized or stainless self-drilling screw instead, since plated zinc will eventually rust through in those conditions.

No. Self-drilling and self-tapping means the point bores the hole and the threads cut their own mating thread in one pass. Drive it straight and keep steady pressure at moderate RPM; too fast and you burn the point before it penetrates, too little pressure and it work-hardens the steel.

Order by MPN QTEKD19. That single number covers the whole spec: #10 diameter, 1-1/2 inch length, 5/16 hex Quadrive head, #2 drill point, zinc plated domestic steel.