Metallics JOHP81 Screw 6-32 x 3/4 OH PH M/S St-Zn (Jar 100)

At 3/4 inch, this length is aimed at device mounting rather than cover plates. Switch and receptacle plate screws are usually much shorter (around 1/4 to 1/2 inch) and a 3/4 inch screw will stand off or bottom out behind a plate. Use the JOHP81 where you need the extra reach, such as pulling a device up through a plaster ring or securing hardware into a tapped 6-32 hole with depth behind it.

Each jar holds 100 screws, packed in a jar rather than a box or bag, which is what makes it practical to keep on a van or a shop bench and scoop from. One part number covers the whole order: JOHP81.

Oval head, as on the JOHP81, has a countersunk underside like a flat head but a rounded crown that sits slightly above the surface. It seats in a countersunk hole and gives a finished look where the head stays visible. Pick a true flat head if the head must sit dead flush, and a round or pan head where there is no countersink at all.

Steel with zinc plating is a dry-location, indoor fastener. The plating gives light corrosion resistance for interior boxes, panels and enclosures, but it will eventually rust in wet, exterior or washdown areas. For those, specify stainless steel instead of the zinc-plated JOHP81.