Metallics JBHC21G Bolt 5/8-11 x 1 HXBT GALV (Jar 50)

Yes, the JBHC21G 5/8-11 x 1 hex bolt is galvanized, so it is the version electricians reach for on outdoor service equipment, wet-location strut, pole and bracket work, and anywhere a plain steel bolt would rust. Pair it with galvanized nuts and washers to avoid mixing coatings on the same joint.

Only for thin stack-ups. With 1 inch of total length under the hex head, the usable grip after you account for a nut and washer is well under an inch, so the JBHC21G works for single-thickness strut, channel, clips, and bracket-to-steel connections. If you are clamping two pieces of strut, a thick base plate, or adding multiple washers, step up to a longer 5/8-11 bolt instead.

No. The JBHC21G jar contains hex bolts only, 50 pieces of 5/8-11 x 1 galvanized. You order 5/8-11 galvanized hex nuts and any flat or lock washers separately, so budget those into the same order if the joint needs them.

It is a hex head bolt, the HXBT designation in the part description. That means a six-sided head you drive with a wrench or socket on both ends, not a domed carriage bolt with a square shoulder. If your hole is in wood and you need the head to resist turning on its own, a carriage bolt is the right part, not this one.

Order it as Metallics JBHC21G. That number covers the 5/8-11 x 1 galvanized hex bolt supplied in a 50 piece jar, and it is the number to quote to avoid being sent a different diameter or length in the same series.