Permatex High-Strength Threadlocker Red is a heavy-duty threadlocker designed for permanently securing fasteners from 3/8" to 1" (10mm to 25mm). It's ideal for locking studs and press fits, adding 3,000 PSI of holding power to slip and press fit assemblies. This threadlocker effectively replaces set screws and snap rings, preventing loosening due to vibration. Because of its high strength, removal may require heat or specialized tools.