Metallics HHN14B Nut 1/4-20 Hvy Hx Nut St-Zn (4,310pcs)

They are 1/4-20, meaning a 1/4 inch nominal diameter with 20 threads per inch, which is the standard coarse (UNC) thread for that size. They will run onto any 1/4-20 bolt, rod, or stud, including 1/4-20 threaded rod used for strut and fixture hanging.

The HHN14B is carbon steel with a zinc plating. Zinc gives it reasonable protection in dry indoor and sheltered electrical work, so it suits interior strut, panel, and fixture hanging. For wet, coastal, or chemically aggressive locations, step up to stainless or hot dip galvanized hardware instead.

A heavy hex nut has a larger across-flats width and a thicker body than a finished hex nut of the same thread, so it spreads load over more bearing surface and takes a bigger wrench. The HHN14B is the heavy hex pattern in 1/4-20, which is what you want where the nut bears on slotted strut, an oversize hole, or sheet metal, or where a spec calls out heavy hex. If your drawing calls for a standard finished hex nut and clearance is tight, the heavy pattern may not fit the pocket.

It is a bulk pack of 4,310 pieces of the 1/4-20 heavy hex nut, which is a quantity aimed at shop stock and MRO cribs rather than a single job. If you are standardizing fastener stock across a facility or a fleet of service trucks, one pack covers a long run of 1/4-20 work.

Yes. Any 1/4-20 male thread takes this nut, including 1/4-20 threaded rod, so it works for rod drops, strut channel nuts and bolts, box and fixture mounting, and general electrical fastening. Pair it with a flat washer when you are bearing on strut slots or sheet metal so the load is spread properly.

The manufacturer part number is HHN14B from Metallics. That number covers the 1/4-20 heavy hex steel nut with zinc plating in the 4,310 piece bulk pack, and it is the only configuration offered under that number.