Metallics QTEKD4V 10 x 1/2 in. 1/4 Hex Head Quadrive Self-Drilling & Tapping Screws - #2 Drill Point - Domestic Steel Zinc - Each

The QTEKD4V carries a #2 drill point, which is the common point size for light gauge steel work, drilling and tapping its own hole in thin sheet and light studs without a pilot. At 1/2 inch overall length, there isn't much thread left once you pass the drill flutes, so it's meant for thin material plus a strap, clip, or box flange, not for stacking thick sections.

The QTEKD4V is domestic steel with zinc plating, which is a mild indoor corrosion coating. It's fine for dry interior framing, strut, boxes, and panel work. For wet locations, exterior, coastal, or anywhere it will see standing moisture, step up to a stainless or coated exterior fastener instead; plated steel will bloom rust.

Yes. The QTEKD4V is made in the USA from domestic steel with a zinc finish, which is why it shows as a domestic fastener. That matters on federally funded and institutional work where the specification calls for domestically produced fasteners.

Either. It's a 1/4 inch hex head with a Quadrive drive, so you can run it with a 1/4 inch magnetic hex nutsetter in an impact or screwgun, or drive it from the square recess in the head when the hex is obstructed or you need to get in flush against an obstruction.

That's the normal use for it. A #10 diameter with a #2 drill point bites a steel stud or track directly, and the 1/2 inch length is sized so the tip doesn't protrude far behind light gauge material, which keeps it from catching wire or drywall behind the stud. For attaching through two layers of heavier steel, go longer than 1/2 inch.

No pilot needed. It's a self-drilling and self-tapping screw, so the #2 point cuts the hole and the threads form in the same pass. Run it at speed with steady pressure; let the point finish drilling before the threads load up, or you'll spin the head off in harder steel.

Order Metallics part number QTEKD4V. That designation covers the #10 x 1/2 in. 1/4 hex head Quadrive self-drilling and tapping screw with a #2 drill point in domestic steel zinc. There are no finish or length variations under that number, so the single part number is all you need to specify.