Working with Unistrut channels? You'll need these seismic rod stiffener nuts! This pack comes with 50 nuts designed for Unistrut channels like #4930, P2486, and SC228. The MPN is 4930, and the brand is unknown, but they're standard hardware. They're brand new, unused, and come packaged. There's a California Prop 65 warning (common for industrial products), but that's just a legal thing. No UPC. These nuts are crucial for securing rods in seismic or high-vibration applications, making your strut systems stronger and safer. Whether you're in construction, HVAC, or electrical work, having these on hand is smart. They're direct replacements, so if you're running low or starting a project, this 50-pack has you covered. Reliable, simple, and essential for professional installations.