The Superlok Series IHN Straight Male NPT x Male NPT Instrumentation Hex Nipple hydraulic adapters, made from high-quality stainless steel, are designed to provide reliable, leak-proof connections for fluid and gas transfer in hydraulic systems. These adapters feature male NPT (National Pipe Taper) threads, which use thread deformation to create a strong metal-to-metal seal when tightened. The nominal pipe size can be determined by measuring the thread diameter and subtracting 1/4". NPT connections are widely used for their durability and are ideal for single assembly applications, though they are not recommended for frequent disassembly due to wear on the threads. Available in varying lengths, these hex nipple adapters are perfect for professionals seeking efficient and dependable solutions for fluid and gas transfer in instrumentation systems.