The PARKER - 6 PH-SS is a hex head plug made from 316 stainless steel designed to close off the end of a pipe, fitting, or port. It features a threaded design with a 3/8 inch -18 thread size and a 3/8 inch nominal pipe size (NPS). The fitting is constructed with a cored plug design and has a bright finish for enhanced surface condition. It is compatible with a wrench size of 11/16 inch for tightening or removal. This plug is suitable for use in plumbing, hydraulic, pneumatic, and industrial piping systems and is designed to seal within its rated operating pressure range when installed according to installation guidelines. Key Features: - Material Grade: 316L stainless steel for corrosion and temperature resistance.- Finish: Bright surface coating.- Connection Type: Male National Pipe Thread (MNPT).- Nominal Pipe Size: 3/8 inch.- Overall Length: 0.78 inch (3/4 inch).- Hex Size: 11/16 inch across flats for wrench compatibility.- Maximum Operating Pressure: 7,200 psi.- Maximum Pressure Rating: 7,600 psi.- Temperature Range: -425°F to 1,200°F.- Standards: Conforms to ANSI B31.1, ANSI B31.3, ANSI B1.20.1.- Does not include pre-applied thread sealant or sealing components.- Magnetic: No. WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov - Nickel (Metallic)