Metallics JRMB80 12-24 x 1 in. Round Head Slotted Machine Screws - Brass - Each

Yes. The Metallics JRMB80 is a 12-24 thread, 24 threads per inch, cut to the ANSI/ASME B1.1 thread standard, which is the thread used on grounding lugs and the threaded holes in steel outlet and device boxes. At 1 inch long it gives you depth for stacking a bracket, bonding jumper, or extension ring behind the screw head.

The screws are solid brass, which is the material normally specified for bonding and grounding hardware because it conducts well and will not rust out in a damp box. Thread is 12-24 at 24 TPI, matching standard tapped ground holes.

The round head sits 0.139 to 0.153 in. above the surface and spans 0.382 to 0.408 in. across. That head width matters if you are fastening through a slotted bracket or a thin plate, the head needs to bear on material at least that wide. Round head screws are not flush, so if you need the fastener below the surface you want a flat head in a countersunk hole instead.

The JRMB80 is made to ASME B18.6.3, the dimensional standard for inch-series machine screws, with threads to ANSI/ASME B1.1. Those are the two designations a submittal for slotted round head machine screws normally calls out.

Both the ARRA and Buy American compliance fields on the JRMB80 are marked compliant. Country of origin is listed as multiple, so if your project requires origin documentation on the specific lot, request it with the order.

Brass holds up well against corrosion in damp interiors and is the usual choice where you also want conductivity, such as bonding screws in a box. One caution: brass is softer and lower in tensile strength than steel or stainless, so for structural or high-torque fastening pick a steel or stainless 12-24 instead. Note also that tensile values quoted for stainless machine screws are approximations, since there is no single performance standard for them.

They come in a jar of 100, and 100 count is the order minimum. Shipping weight on the jar is 1.15 lbs, and the container measures 3 x 2.7 x 3 in., which is convenient if you are stocking a truck bin or a shop drawer rather than buying loose.

Order Metallics JRMB80, from the JRMB series of round head slotted brass machine screws. Other diameters, lengths, and pack quantities in the same series are available by request if the 12-24 x 1 in. is not the size you need.