Metallics JBRHC6 Bolts 1/4-20 x 3 HXBT Br (Jar 100)

It's a 1/4-20 by 3 inch hex bolt: 20 threads per inch on a 1/4 inch diameter shank, with a 3 inch length. Measured outside diameter runs 0.2450 to 0.2500 inch, so it drops through a standard 1/4 inch clearance hole.

Solid brass. The material is listed as brass and the head color is brass as well, so it is a brass fastener throughout rather than a plated steel bolt. That matters for grounding and bonding work and for any damp location where you want to avoid galvanic trouble with other brass or copper parts.

The JBRHC6 ships as a jar of 100 pieces, and 100 count is the order minimum, so the jar is the smallest unit sold. Metallics does offer other sizes and quantities by request if 3 inch length or the 100 pack is not what you need.

Yes. The thread is a standard 1/4-20 UNC, 20 threads per inch on a 1/4 inch shank, so it mates with any 1/4-20 nut, coupling, or tapped hole. Pair it with brass nuts and washers if you want to keep the whole joint one metal.

Both the Buy American and ARRA fields are flagged compliant on the JBRHC6, though country of origin is listed as China. On federally funded work, verify which standard your specification is actually invoking, because the two have different sourcing tests.

Grip length is what decides it. At 3 inch overall length with a 1/4-20 thread, you have to subtract your stack thickness plus enough thread for the nut and any washers. Across a 1-5/8 inch strut channel with a nut and two washers, 3 inch leaves plenty of spare thread. For thinner stacks, Metallics offers shorter lengths in the same JBRHC series by request so you are not left with excess shank.