B-Line Eaton series strut channel, nuts, all threaded rod, Steel, Channel nuts, Spring nut, Yellow zinc chromate, 3/8"-16 thread size

A spring nut like the B-Line N528YZN has a coil spring on the back that holds the nut in place inside the channel while you position it and start the bolt, so it won't drop out of an overhead run before you tighten. A plain (springless) channel nut has to be held by hand or supported, which is workable at bench height and awkward on a ceiling trapeze. For overhead electrical and pipe support work, the spring version saves the second set of hands.

Yellow zinc chromate is a plated coating on steel intended for dry indoor service. It gives more corrosion resistance than plain steel, but it is not a substitute for hot dip galvanized or stainless in exterior, wash-down, or corrosive environments. For a rooftop, parking garage, or pool mechanical room, specify a galvanized or stainless channel nut instead.

No. The N528YZN is the spring channel nut only. You supply the 3/8"-16 hex bolt, threaded rod, or hanger hardware separately, along with any flat or lock washers your detail calls for.

Strut channel nuts are sized to the channel slot profile, so match the nut to the channel series you are actually installing. B-Line strut and B-Line nuts are the safe pairing. If you are working in an existing building with another manufacturer's channel already up, confirm the slot width and the nut's .85 in width work together before you buy a case.

The nut measures 1.375 in length/depth, .85 in width, and .85 in height, and each piece weighs .093 lb. Those numbers matter for two things: clearance inside the channel slot when you slide it along a run, and shipping weight when you're ordering a few hundred for a job.

It drops into a strut channel run and gives you a threaded 3/8"-16 anchor point anywhere along the slot. Typical uses are hanging threaded rod for trapeze supports, mounting conduit clamps and straps, fastening pull boxes and panels to strut, and building equipment racks. Because it slides, you can adjust the position of a hanger or clamp without drilling new holes.