The 3 150 316 Locknut - SP114 is a heavy-duty stainless steel fastener designed for secure, vibration-resistant connections in demanding environments. Made from 316 stainless steel, it provides superior corrosion and pitting resistance compared with 304, making it ideal for marine, chemical, and outdoor applications, as well as analyzer shelters and lab skids. Its self-locking design ensures reliable holding power and repeatable positioning after service, while the SP114 specification guarantees precise thread integrity and consistent dimensions. With ASME B1.20.1 NPT threads and MSS Class 150 construction, this locknut delivers professional-grade durability and dependable performance for industrial and mechanical assemblies requiring anti-rotation and long-lasting reliability. Order now for fast shipping and professional-grade results.