Straining Screws, commonly referred to as turnbuckles, are tensioning devices used to regulate the length and tightness of connected assemblies. They consist of a metal body with internal threads and two end fittings—either eye, hook, or jaw—that rotate to increase or decrease tension. Noted for their reliability and easy adjustability, these screws are suitable for both heavy-duty industrial projects and light-duty installations. Depending on application environments, they are available in several finishes, including galvanized coatings for outdoor use and stainless steel for superior corrosion resistance.