Metallics JRMB63 6-32 x 1 in. Round Head Slotted Machine Screws - Brass - Each

No. The JRMB63 brass machine screws are not Buy American compliant and are not ARRA compliant, with country of origin listed as multiple. For a project with domestic sourcing requirements written into the spec, you need a domestically produced fastener instead.

Brass is the material here, and it's picked for two reasons on electrical jobs: it resists corrosion in damp or outdoor enclosures where plated steel rusts and seizes, and it is non-magnetic and conductive, which matters for bonding and grounding connections. The trade-off is that brass is softer than steel, so don't overtorque it and don't use it where the screw carries real structural load.

They ship in a jar of 100, and 100 is the order minimum. If you need a handful for one device box, you are still buying the full jar. For MRO stockrooms that is usually the point: one jar covers a year of cover plate and device changes.

It will not sit flush. A round head is a domed head that seats on top of the surface, measuring 0.24 to 0.26 inch across and 0.091 to 0.103 inch high, built to ASME B18.6.3. If you need the head buried in the material, you want a flat head countersunk screw instead, not this one.

No. A machine screw has a uniform, non-tapered thread and no self-drilling point, so it needs a tapped hole or a nut to work. For sheet metal use a self-tapping sheet metal screw, and for wood a wood screw. Where this one earns its place is electrical, plumbing and HVAC assembly into pre-tapped holes.