Metallics QTEKD1V 8 x 1/2 in. 1/4 Hex Head Quadrive Self-Drilling & Tapping Screws - #2 Drill Point - Domestic Steel Zinc - Each

The Metallics QTEKD1V is a #2 drill point self-drilling and tapping screw, which is the light-gauge point used for steel studs, track, and sheet metal rather than structural steel. At 1/2 inch long with a #8 diameter, it is sized for thin-gauge stud-to-track and strap work, not for heavy plate. If you are drilling into thick steel, step up to a higher drill point number.

A 1/4 inch hex socket or nut driver is the primary fit on the QTEKD1V. The Quadrive head also takes a square-drive bit, so if the hex socket cannot reach into a tight box or channel you can drive the same screw with a square bit instead.

Yes. The QTEKD1V is made in the USA from domestic steel with zinc plating, which is what institutional, government, and public-works buyers need when the spec calls for domestic fasteners.

No. It drills and taps its own hole in one pass because it has a drill point rather than a sharp gimlet point. Drive it with steady pressure and let the point cut before the threads engage.

These are zinc-plated domestic steel. Zinc plating handles indoor and protected conditions, general electrical rough-in, and light exposure, but it is not a stainless or hot-dip coating. For sustained wet, coastal, or corrosive environments, specify a stainless or hot-dip galvanized fastener instead.

For single-layer light-gauge steel, yes. The 1/2 inch length gives enough thread past the metal to hold a box ear, strap, or clip, and the short shank keeps the point from punching through into wiring behind the stud. If you are stacking two members or going through a thicker substrate, move to a longer screw so the threads fully engage past the far side.

Order Metallics part number QTEKD1V. That covers the #8 x 1/2 inch, 1/4 inch hex head Quadrive self-drilling and tapping screw with a #2 drill point in zinc-plated domestic steel.