The Series 2708-LN Straight Male NPT x Male NPT Bulkhead adapter with locknut hydraulic adapters, made from durable carbon steel, are essential components designed to create secure and reliable connections in hydraulic systems for fluid and gas transfer. Available in varying lengths, these adapters utilize the National Pipe Taper (NPT) standard, which features tapered threads to ensure a dependable seal through thread deformation, resulting in a strong metal-to-metal connection when tightened. The nominal pipe size can be easily identified by measuring the thread diameter and subtracting 1/4". With over 100 years of use in the U.S., NPT connections are widely trusted across various applications; however, they are best suited for single assembly applications and are not recommended for frequent disassembly due to potential wear on the threads. The inclusion of a locknut enhances stability and security, making these bulkhead adapters an excellent choice for professionals seeking efficient and durable hydraulic solutions.