Metallics JTRM81 6-32 x 3/4 in. Round Head Tri-Drive Machine Screws - Steel Zinc - Each

6-32 is the standard machine screw thread used for device and cover mounting in steel outlet boxes, plaster rings and switch/receptacle straps, so the Metallics JTRM81 threads into those tapped holes. The 3/4 inch length gives extra reach where a mud ring, thick plaster or stacked plates push the device away from the box. For flush mounting with no extension, a shorter 6-32 is usually the better pick.

Three options on the same head. The JTRM81 head takes a flat blade, a Phillips bit, or a square (Robertson) driver, so whatever is already on your belt or in the drill will seat it. Handy on service work where you are not carrying a full bit set.

No. The JTRM81 has a round head, which domes above the surface rather than sinking into a countersink. Fine for strapping a device to a box, grounding screws, or holding a plate or clamp where the head can stand proud. If the plate is countersunk and has to finish flat, use a flat head screw instead.

The JTRM81 is zinc plated steel, which is a mild indoor corrosion coating. It holds up in dry interior work, panels, boxes and gear rooms. For wet locations, coastal exposure or washdown areas, go with stainless rather than zinc plated steel.

A machine screw like the JTRM81 needs a pre-tapped hole or a nut, which is exactly what an electrical box, device strap or enclosure already gives you. If you are driving into untapped sheet metal, drywall, or a hole you drilled yourself, you want a self-drilling or sheet metal screw instead, not a 6-32 machine screw.

They ship in a jar, which is the format most electricians and MRO stockrooms want for small fasteners: one container that stays closed in a van bin and pours a handful at a time instead of a loose bag.

Yes, the JTRM81 6-32 x 3/4 in. round head tri-drive machine screw is made in the USA, which matters on public and institutional work carrying domestic material language.