40SP112N038 - 3/8 in. MNPT 304 Stainless Steel Hex Socket Plug, Class 150, 5/16 in. Hex Size

The ZORO SELECT - 40SP112N038 is a stainless steel hex socket plug designed to close off the end of a pipe, fitting, or port. It features a 3/8-inch nominal pipe size with male national pipe threads (MNPT) and is made of 304 stainless steel. The internal hexagonal recess allows tightening or removal with an Allen key or hex wrench, yielding a threaded MNPT connection designed to be sealed using appropriate thread sealant per standard piping practices. This fitting meets ASTM A351 standards and is rated for Class 150 pressure, supporting a maximum operating pressure of 300 psi and a temperature range from -60 to 450 degrees Fahrenheit. Key Features:

• - Material: 304 Stainless Steel
• - Fitting Shape: Hex Socket Plug
• - Nominal Pipe Size: 3/8 inch
• - Connection Type: Male National Pipe Thread (MNPT)
• - Pressure Class: Class 150 (Maximum Operating Pressure: 300 psi)
• - Temperature Range: -60 to 450 Degrees Fahrenheit
• - Hex Size (across flats): 5/16 inch
• - Overall Length: 12.7 mm
• - Thread Size: 3/8 inch
• - Standards: ASTM A351
• - Does not include pre-applied thread sealant or sealing components

📋 Procurement & Shipping Notice

• LTL Freight Dispatch: Heavy commercial units ship directly via insured LTL carrier with delivery coordination included.
• Project Timelines & Submittals: Need guaranteed delivery dates, formal submittals, or tax-exempt processing?

👉 Request a Commercial Quote or contact our procurement team for direct freight scheduling.