Metallics JTRM85 8-32 x 3/4 in. Round Head Tri-Drive Machine Screws - Steel Zinc - Each

The JTRM85 round head screw takes a slotted, Phillips, or square (Robertson) driver. The head is cut for all three, so an electrician can set it with whatever bit is already in the drill or with a flat blade on a hand screwdriver. Handy for device and cover plate work where you don't want to swap tips.

8-32 is the standard thread for electrical device and box mounting in North America, and the JTRM85 is an 8-32 x 3/4 inch machine screw, so it threads into the tapped 8-32 holes in outlet boxes, mud rings, and receptacle and switch yokes. The 3/4 inch length gives extra reach where a device sits proud of a deep ring; trim your length choice to the depth you actually need so the screw doesn't bottom out behind the box ear.

The JTRM85 is zinc plated steel. That coating handles dry interior and occasionally damp conditions, but it is not a stainless screw. For wet locations, coastal exposure, or anything submerged or continuously wet, specify a stainless 8-32 machine screw instead.

A machine screw like the 8-32 JTRM85 has a uniform machine thread and needs a pre-tapped hole or a nut, which is exactly how electrical boxes, mud rings, and device yokes are made. Use a sheet metal or self-tapping screw only when you are biting into untapped sheet steel or a drilled hole with no thread. Running a sheet metal screw into a tapped 8-32 hole strips it.

Round head, so it stands above the surface with a domed profile and seats on the top face of the material. It needs no countersink. If you want the fastener flush with a plate or panel, a round head is the wrong choice; specify a flat head and a countersunk or chamfered hole.

They ship in a jar, which is how Metallics packages these round head tri-drive machine screws for bench and van stock. The jar keeps loose 8-32 hardware from scattering in a service truck, and it refills easily into a parts organizer.

Yes. The 8-32 x 3/4 inch round head tri-drive machine screw is US made, which matters on government, school, and other buy-American jobs where fasteners fall under the domestic content requirement.