60101025 - 1/8 Inch Brass Hex Socket Pipe Plug

Precision Brass Sealing Solution for Industrial Systems

The 1/8" NPT Brass Hex Socket Pipe Plug is an essential component for maintaining the integrity of pneumatic, hydraulic, and gas distribution systems. Manufactured from high-grade brass, this fitting offers an optimal balance of durability and machinability, ensuring a long service life even in demanding industrial environments. Unlike steel or iron fittings, brass provides natural resistance to corrosion and rust, making it the material of choice for water lines, air compressors, and inert gas manifolds where moisture or condensation may be present.

Designed with standard National Pipe Taper (NPT) threads, this plug creates a mechanical seal by wedging the flanks of the threads together as it is tightened. This tapered design is critical for high-pressure applications, ensuring that the seal tightens progressively. The 1/8" size is a common standard for gauge ports, pilot lines, and auxiliary outlets on industrial regulators and flowmeters. The precision machining of the threads ensures smooth engagement, reducing the risk of galling—a common issue with softer metals—and allowing for a secure, leak-free fit when used with appropriate thread sealants like PTFE tape or pipe dope.

The defining feature of this plug is its internal hex socket (Allen) drive. This design allows the plug to be installed flush with the surface of the mating component, or even countersunk, depending on the depth of the port. This is particularly advantageous in tight spaces or on compact manifolds where a protruding square head or hex head would be obstructive or aesthetically undesirable. The internal drive also permits the use of high-torque tools to ensure the plug is seated firmly without stripping the external profile.

Whether you are fabricating custom gas distribution panels, repairing welding equipment, or maintaining facility air lines, this brass plug delivers reliability. It is compatible with a wide range of media, including compressed air, water, oil, and non-corrosive gases, making it a versatile addition to any industrial inventory.