Metallics JRMB77 6-32 x 3 in. Round Head Slotted Machine Screws - Brass - Each

Both flags are marked compliant on the JRMB77, so it can go on federally funded work where Buy American and ARRA provisions apply. Country of origin is listed as multiple, so if your spec requires a single named origin on the submittal, that is the detail to pin down with your documentation.

For a normal flush box, yes, it is far more screw than you need and the excess thread will bottom out or foul wiring behind the yoke. The 3 in. length on the JRMB77 is meant for deep-set boxes, stacked extension rings, or thick tile and plaster build-ups where the device has to reach forward. Shorter 6-32 lengths are the right call for standard depth work.

It will. A round head is a domed head that seats on the surface, not into a countersink, so it stands above the plate. The JRMB77 head measures 0.24 to 0.26 in. across with a head height of 0.091 to 0.103 in. If you need the screw flush in a countersunk plate hole, a round head is the wrong head style.

Brass is the pick when you want corrosion resistance plus a non-magnetic, non-sparking fastener, and for brass or bronze cover plates and fixture bodies where mixing metals would show or set up galvanic corrosion. The trade-off is strength: brass is softer than steel, so it strips more easily if you overdrive it. For a high-load structural pull, steel is the better material.

They come in a jar, 100 count minimum. That is the order increment, so a single screw is not an orderable unit. The jar of 100 weighs 1.47 lbs.

Head and slot geometry is made to ASME B18.6.3, the dimensional standard for slotted and recessed head machine screws, and the thread conforms to ANSI/ASME B1.1. Those two together are what a spec writer or inspector is looking for on a machine screw callout.