Metallics JRMB64 6-32 x 1-1/4 in. Round Head Slotted Machine Screws - Brass - Each

Yes. 6-32 is the standard thread used for device mounting in outlet and switch boxes, and the Metallics JRMB64 screw is cut to 6-32 with 32 threads per inch to the ANSI/ASME B1.1 thread standard, so it engages box and yoke tapping made for 6-32 hardware. At 1-1/4 in. long it gives extra reach for mud rings, thick plaster rings, or stacked spacers where the factory screw runs out of thread.

No. The JRMB64 is not Buy American compliant and is not ARRA compliant, with country of origin listed as multiple. If your contract carries a domestic-content clause, these will not satisfy it and you need a domestically sourced brass screw instead.

Brass is non-magnetic, corrosion resistant, and conductive, which is why it shows up on grounding hardware, fixture bodies, and damp-location device mounting. The JRMB64 is solid brass through the whole screw, not plated steel. If you need high clamp load on a structural connection, a steel or stainless screw is the better pick; brass is softer and will gall or strip sooner if you lean on a driver.

It stands proud. The round head is domed, measuring 0.24 to 0.26 in. across and 0.091 to 0.103 in. high, so it bears on top of the surface rather than sinking in. If you need the head buried flush in a countersunk hole, you want a flat head screw instead, not this one.

They ship in a jar of 100, which is also the order minimum. For MRO stock or a truck bin that is a single refill unit, not a loose count, so plan on 100 pieces per jar when you work out quantities for a job.

Head and body dimensions follow ASME B18.6.3, the standard for inch-series slotted and recessed head machine screws, and the threads follow ANSI/ASME B1.1. Those two are what a spec sheet usually calls out for a 6-32 round head screw, so the JRMB64 can be listed against that language.

It is stocked for electrical, plumbing, heating and air conditioning work. Typical uses are mounting devices and plates in boxes, fastening fixture parts, and anywhere a longer-than-standard 6-32 is needed to reach through a ring or spacer. Property maintenance crews keep the 1-1/4 in. length on hand because the short factory screws rarely reach once a wall has been built up.

No strength class is assigned to the JRMB64. Brass machine screws of this type are sold on dimensional conformance, not a graded strength, and the product notes state plainly that there is no single standard for the performance requirements of these screws. Treat them as a mounting and finish fastener, not a load-bearing one.