--Rivet nuts are made of carbon steel, high-strength, load-bearing threads; with zinc plated finish, Rust and corrosion resistant Suitable occasions such as medicine, beverage, chemical industry, air conditioning, fire fighting, gas, etc. - Rivet Nuts can be installed from one side of the workpiece, also known as a Blind Application. - Rivet Nuts work great when easy disassembly and reassembly of products is required. - Rivet Nuts can be installed in many different kinds of material including steel, plastic and fiberglass. 【SIMPLE TO USE】 These threaded insert nutsert get the job done! Crushed down fast and do not spin when some torque is used on them. Get you a threaded hole in metal nice and fast. Once installed, they sit tight and secure. A nice thread insert nuts we offer and they are a good addition to your tool kit.