Metallics JSTS22 10 x 1 in. Pan Head Slotted Tapping Screws - 18-8 Stainless - Each

That's what a Type A tapping screw is built for. The JSTS22 is a Type A screw with a gimlet point, so it drills its own thread path into a drilled or punched pilot hole in sheet metal, and it runs 12 threads per inch on a #10 diameter, 1 inch long body. The coarse spacing is what grips thin sheet. You still need a pilot hole sized to the sheet gauge; the gimlet point starts the screw, it does not punch the hole.

Mechanically yes, but there's a corrosion caution. The JSTS22 is 18-8 stainless, and fastening stainless parts to aluminum or steel can set up a galvanic couple in some environments, which corrodes the softer base metal over time. Indoors and dry, that's usually a non-issue. Outdoors, in wet locations, or in coastal or washdown environments, use an isolating washer or pick a fastener that matches the base metal.

No. The JSTS22 is not Buy American compliant and is not ARRA compliant, with country of origin listed as multiple. On a federally funded job carrying domestic sourcing requirements, you'll need a domestically sourced fastener instead.

The pan head on the JSTS22 stands 0.099 to 0.11 inch proud, across a 0.357 to 0.373 inch diameter head. Pan heads do not countersink, so plan on roughly a tenth of an inch of projection. If you need the fastener flush with the panel face, this is the wrong head style; you want a flat head in a countersunk hole instead.

They do. The JSTS22 pan head is built to ASME B18.6.3-2013 for head dimensions, and the thread form follows ASME B18.6.4 for tapping screws. That means head height, head width, slot depth and thread pitch fall inside published tolerances rather than a house spec, which is what an inspector or a submittal reviewer will be checking.

The JSTS22 ships in a jar of 100, and 100 is the order minimum. Package weight is 0.7 lbs. If you need a different count or a different screw size in the same pan head slotted stainless family, Metallics offers other sizes and quantities by request.

Metallics lists the JSTS22 for the electrical, plumbing, and HVAC trades. Typical work is mounting boxes, straps, brackets, and covers to sheet metal enclosures, duct, and channel where you want stainless for moisture resistance. The 1 inch length gives enough thread engagement for a spacer or a strap plus the panel; for fastening directly to thin sheet with no standoff, a shorter screw wastes less thread.