The Pentair 154412 Internal Locknut is a critical component designed for securing various HVAC systems. This internal locknut is specifically sized at 2" , providing a reliable fastening solution for mechanical and electrical assemblies. Made from high-strength materials, it ensures a secure fit by engaging with the internal threads of a corresponding part, preventing loosening due to... https://www.usapoolshop.com/154412-pentair-internal-locknut