Metallics JTEKS15 Screw 10 x 1-1/4 PN SD-PH TS D-Pt2 S (Jar 100)

No pilot hole needed. The #2 drill point on this #10 x 1-1/4 inch screw cuts its own hole, which is the point of a self-drilling screw for strut, sheet metal enclosures, and light gauge steel framing work.

Each jar holds 100 of the #10 x 1-1/4 inch self-drilling pan head screws. The jar pack is the usual way these are bought for a service van or a shop bin, since you can pull a handful without the bag tearing open in a tool bag.

Pan head, like the JTEKS15, sits low and round and is the one to use where a box, strap, or plate has to sit flush against the surface and a hex head would stand in the way. A hex washer head is better when you want to run the screw with a nut driver and need the wider washer face to bear on thin sheet or a slotted hole. Both drill their own hole; the difference is clearance and how you drive them.

Length is the thing to check. At 1-1/4 inches, the JTEKS15 gives you a long reach, which suits going through a bracket or a box ear plus light gauge steel. If you are only fastening thin sheet to thin sheet, that extra length leaves a sharp point protruding on the back side, so a shorter self-driller is the better pick there.

A Phillips bit. The JTEKS15 has a Phillips recess in a pan head, so a standard #2 Phillips driver bit in a cordless screwgun is what an electrician would reach for.