Metallics JRMB6 6-32 x 3/8 in. Round Head Slotted Machine Screws - Brass - Each

6-32 is the standard machine screw thread used for receptacle and switch mounting in outlet boxes and for cover plates, and the Metallics JRMB6 is a 6-32 screw cut to the ANSI/ASME B1.1 thread standard, so it threads into any 6-32 tapped box ear or device strap. At 3/8 inch long it is short, so it suits cover plates and device mounting where the threaded hole is shallow rather than deep stand-off work.

The JRMB6 is flagged as both Buy American compliant and ARRA compliant, which is what a public agency or institutional procurement office needs on the submittal. Country of origin is listed as multiple, so if the spec requires a single named origin on the paperwork, confirm the origin of the lot you receive.

The head measures 0.24 to 0.26 inch across with a head height of 0.091 to 0.103 inch, built to the ASME B18.6.3 dimensional standard. That gives you roughly a quarter inch of bearing surface, so it will span a clean 6-32 hole and a little slop, but it is not a washer head and won't bridge a badly enlarged or stripped hole. For that, add a flat washer under the head.

Brass is the material on the JRMB6, and electricians specify it for grounding and bonding connections and for exposed trim where corrosion or galvanic mismatch with brass hardware is a concern. Brass is also softer than steel, so torque it by hand. If you need higher tensile strength for structural clamping, a steel or stainless 6-32 is the better call.

They come in a jar, with a minimum order of 100 count. That is the stocking unit for a service van or MRO shelf rather than a single loose screw, which is worth knowing if you only need a handful.

Other sizes and quantities in the Metallics JRMB round head slotted brass line are available by request. The JRMB6 itself is the 6-32 x 3/8 inch, so if you are standardizing a facility on one brass screw across several lengths, the family will cover it.