Metallics JTEKD2V 8 x 3/4 in. 1/4 Indented Hex Head Self-Drilling & Tapping Screws with Washer - #2 Drill Point - Steel Zinc - Each

The #2 drill point on the JTEKD2V is rated for panel thickness of 0.035 to 0.100 in. That covers typical light-gauge steel studs, strut, and sheet metal enclosures. Go thicker than 0.100 in and you are outside the drill point's range, so you would need a heavier drill point or a pilot hole.

The JTEKD2V is heat treated to Rockwell C32-40 with a minimum torsional strength of 42 lb-in. Drive it to seat and stop; it is the over-torque after the washer lands that shears a #8 self-driller, not the drilling itself. Manufacturer data notes drill time of about 2.5 seconds through a 1 mm plate, so if it is still spinning well past that, the point is dulled or the panel is thicker than the 0.035 to 0.100 in range.

It takes a 1/4 in hex driver. The indented hex washer head measures 0.244 to 0.25 in across the flats, 0.272 in across the corners, with a head height of 0.096 to 0.11 in. A standard 1/4 in magnetic nut setter in an impact or screw gun is all you need.

Yes. The integral washer runs 0.322 to 0.348 in outside diameter and 0.019 to 0.031 in thick, so it spreads bearing over slotted straps, clamp tabs, and plate flanges on its own. No loose washer needed in the pouch.

The JTEKD2V is zinc plated carbon steel (AISI 1016-1024), which is a dry indoor-duty finish. It is fine for interior enclosures, strut, studs, and ceiling grid. For exterior, wash-down, coastal, or corrosive areas, specify a stainless self-drilling screw instead rather than relying on zinc plate.

It is a #8 diameter, 3/4 in long Type BSD self-drilling and tapping screw with 18 threads per inch, UNC form, built to SAE J78-2013 thread standard and ASME B18.6.3-2010 dimensions. That 18 TPI is the standard #8 coarse pitch, so it cuts and holds in light-gauge steel.

Metallics lists the JTEKD2V as both ARRA compliant and Buy American compliant. Country of origin is recorded as multiple, so if your contract requires a single named origin on the submittal, confirm the origin on the lot you receive.

No. A Type BSD drill-point screw is made to cut its own hole in sheet metal 0.035 to 0.100 in thick. In wood the drill point reams instead of threading and in drywall alone there is nothing for the 18 TPI thread to bite. Use a wood screw or a drywall anchor for those, and save the JTEKD2V for steel stud, strut, enclosures, and metal deck.

They ship in a jar of 500, which is the order minimum (500 CT). The jar comes in at 2.3 lbs. Good quantity for a stocked van or a shop crib rather than a one-off repair.