Metallics N169 Nut 1-8 Hx Nut St-Zn (100pcs)

The N169 is a 1-8 hex nut, meaning a 1 inch nominal diameter with 8 threads per inch. That is the standard UNC coarse pitch for 1 inch diameter fasteners, so it threads onto 1 inch coarse-thread rod, anchor bolts, and hex bolts. It will not run on 1-12 or 1-14 fine-thread stock.

Yes, as long as the rod is coarse thread. Electrical hanging rod in 1 inch diameter is cut to 1-8 UNC, which is exactly what the N169 nut is threaded for. It is a plain hex nut, so for overhead hanging work you would typically pair it with a flat washer and, where vibration is a concern, a lock nut or second jam nut.

Zinc plated carbon steel, not stainless. The zinc coating gives it indoor and sheltered corrosion resistance, which covers most electrical rough-in, panel mounting, and strut work. For direct outdoor exposure, wet locations, or chemical environments, specify a stainless or hot dip galvanized nut instead.

They ship 100 pieces per pack. For contractors and MRO stockrooms that is one bin quantity of 1 inch coarse-thread nuts, so order in multiples of 100 rather than by the individual piece.

A plain hex nut such as the 1-8 N169 relies on torque and clamp load alone to stay put, and it can be run on and off repeatedly. A lock nut (nylon insert or distorted thread) resists backing off under vibration but is intended for limited reuse. On hanger rod, seismic bracing, or equipment subject to vibration, use a lock nut or back the plain nut up with a jam nut. For general bolted assembly and anchor bolt work, the plain hex nut is the normal choice.