Plunger Nut

The plunger nut is a precision fastening component used to securely attach the plunger (or piston rod) to the crosshead or connecting rod in a mud pump. Its main function is to ensure rigid, stable coupling that allows efficient transmission of mechanical force from the power end to the fluid end, enabling consistent fluid displacement and pump performance.

Manufactured from high-strength steel and often treated for enhanced corrosion and wear resistance, plunger nuts must withstand high torque, vibration, and cyclical stress. A properly installed plunger nut prevents misalignment, reduces mechanical wear, and is essential for the long-term reliability of the pump system.

Our plunger nuts are fully compatible with FMC BEAN, ATLAS COPCO (Trido series), and TRIAQUA mud pumps. Designed to OEM standards, they ensure a precise fit, secure fastening, and maximum durability in demanding drilling environments.