Metallics JBRHC5 Bolts 1/4-20 x 2-1/2 HXBT Br (Jar 100)

Solid brass. Both the material and the head color are specified as brass, not a plating over steel. That matters for grounding and bonding work, where a brass bolt gives you a conductive, corrosion resistant connection and avoids galvanic trouble against copper lugs, bus, and ground clamps. It also means the bolt is softer than a steel Grade 5, so do not torque it like one.

For a grounding or bonding connection, brass is the choice. The JBRHC5 is solid brass through the head and body, so it will not rust out in a damp pull box or an outdoor enclosure and it sits close to copper electrically, which keeps the joint from corroding where a plated steel bolt would. For structural loads such as hanging strut or trapeze supports, use a steel bolt instead; brass does not carry the tensile strength for that work.

The hex head measures 0.428 to 0.438 inch across the flats, which is the standard 7/16 inch wrench or socket size for a 1/4-20 hex bolt. Wrenching height on the head is 0.16 inch, so a shallow open-end wrench or a standard 7/16 socket both engage fully.

They ship 100 to a jar, and 100 count is the order minimum, so the jar is the smallest unit sold. The jar packaging is handy on a service truck or a maintenance shelf because it keeps the brass hardware together and uncontaminated. Other sizes and quantities are available by request.

At 2-1/2 inches of length, the JBRHC5 goes through a deep stack: a ground bar, a lug or two, washers, and an enclosure wall or spacer block, with thread left for the nut. If you are only joining a lug to a bar, this length will leave excess thread standing proud, so a shorter 1/4-20 brass bolt is tidier. Other lengths in the series are available by request.

Country of origin on the JBRHC5 is China. Worth knowing up front if you are buying into a project with domestic sourcing requirements, because origin documentation is usually the first thing an inspector or an owner's rep asks for on fasteners.