Parker 3/8 Shp-s Square Head Plug 3/8 Inch Mnptf Steel

Product Description

The PARKER 3/8 SHP-S is a steel square head pipe plug rated for male MNPTF connections at 3/8 inch thread size. Designed to seal pipe ends and unused ports in high-pressure hydraulic and industrial pneumatic systems, this plug handles a maximum working pressure of 6,000 psi. The square head profile accepts standard wrench drive, allowing for reliable installation torque in tight or congested manifold environments. At 0.83 inches in length and 0.0506 pounds, it is compact and suited for installations where space around port clusters is limited. Licensed pipefitters, millwrights, and hydraulic system technicians typically specify this fitting for sealing off inactive circuit branches or capping test ports.

This plug is appropriate for use in industrial fluid power systems, hydraulic manifolds, pneumatic assemblies, and process piping installations that require a pressure-rated pipe thread closure. The MNPTF thread form provides a dry-seal tapered thread connection, making it suitable for applications where thread sealant compatibility is a design consideration. It is typically installed in steel or ductile iron ported components in both fixed and mobile industrial equipment.

Key Features

• Maximum working pressure of 6,000 psi for demanding hydraulic and industrial applications
• MNPTF dry-seal tapered male thread for leak-resistant port closure without reliance on sealant alone
• 3/8 inch male thread size fits standard NPT ported components
• Steel construction provides durability and compatibility with petroleum-based and water-based hydraulic fluids
• Square head design accepts open-end or box wrench drive for controlled installation
• Compact profile at 0.83 inches length suits confined manifold and valve body installations

Compatibility

Designed as an OEM-style replacement or service plug for industrial pipe and hydraulic fitting assemblies requiring a 3/8 inch MNPTF square head closure rated to 6,000 psi.

Installation Notes

Installation should be performed by a qualified pipefitter, hydraulic technician, or industrial mechanic familiar with pressure system service. Depressurize and isolate the circuit fully before removing or installing any pipe plug. MNPTF dry-seal threads may still benefit from a compatible thread sealant depending on system fluid and pressure cycle requirements — consult system design specifications. Follow applicable industry codes and equipment manufacturer guidelines for torque and thread engagement practices.