B-Line Eaton series strut channel, nuts, all threaded rod, Steel, Medium channel nuts, Spring nut, Yellow zinc chromate, 5/8"-11 thread size

The N255CYZN channel nut is tapped 5/8"-11, so it accepts 5/8 inch all-thread rod or 5/8 inch bolts with standard coarse thread. If your rod is 1/2-13 or 3/8-16, this is the wrong nut in the series.

Yes. It is a medium channel nut sized 1.375 inches wide, which is the width that turns into and seats in the inturned lips of standard 1-5/8 inch strut channel. The nut is 2 inches long and .5 inch high, so it drops in at an angle and rotates a quarter turn to lock against the channel lips.

A spring nut carries a captive spring on the body that holds the nut up against the channel lips once it is turned into place, so it stays positioned while you thread the rod or bolt in with one hand. A plain (springless) channel nut has to be held in the channel until the bolt catches, which is awkward overhead. The N255CYZN is the spring version.

Yellow zinc chromate on steel is a general indoor and protected-environment coating. It handles dry interior mechanical rooms, ceiling spaces and normally dry runs fine. For sustained exposure to weather, washdown or corrosive atmosphere, step up to an electro-galvanized or hot dip galvanized channel nut, or stainless.

That is exactly the use. Turn the nut into the strut, spin the 5/8"-11 rod through it, and the spring keeps the nut seated while you set the rod length. Because the thread is tapped through a .5 inch high steel body, the rod can pass continuously through and be locked with a jam nut under the channel if you want positive retention.

No. The N255CYZN is the nut only, in steel with a yellow zinc chromate finish. You supply the 5/8"-11 rod or bolt, plus any flat washer, jam nut or beam clamp the hanger detail calls for.

The catalogued item is model N255CYZN, and the weight on record is .164 lb, which is one nut. Order the quantity you need per hanger point; there is one nut per rod or bolt connection.