Metallics JTRM98 10-32 x 1 in. Round Head Tri-Drive Machine Screws - Steel Zinc - Each

The JTRM98 round head has a combination recess that takes a slotted driver, a Phillips bit, or a square (Robertson) bit. On a panel job that means whatever is already on your belt will seat it, and a stripped Phillips recess can usually still be backed out with a flat blade or a square bit.

It is zinc plated steel, which is a mild corrosion barrier for dry interior work, panel interiors, device mounting and general indoor MRO. For wet locations, exterior enclosures or coastal exposure, specify a stainless screw instead; zinc plating will eventually rust through in standing moisture.

A round head sits on top of the surface and bears on the material around the hole, so it works in untapered, straight-drilled holes in boxes, rings and brackets. A flat head needs a countersunk hole to sit flush, which sheet steel electrical parts generally are not prepped for. If you need the head below the surface, the round head is the wrong choice.

No. A machine screw like the JTRM98 has straight machine threads and a blunt end, so it needs a tapped hole or a nut. It will not cut its own thread in wood, drywall or untapped sheet metal. For those, use a self-tapping or sheet metal screw, or drill and tap the hole first.

They ship in a jar, which is how electrical contractors usually want a loose fastener on the truck: scoop out what you need and the lid keeps the rest from spilling across the bin. Handy for stocking a van shelf or a shop MRO crib.

Yes, the JTRM98 10-32 x 1 inch round head tri-drive screw is US made, which matters on government, school and other publicly funded work that carries domestic-sourcing language on the fastener schedule.