Parker Coupler: 1/4 in Coupling Size, 1/4"-18 Thread Size, Female NPTF, Steel

The PARKER SM-251-4FP is a hydraulic quick-connect coupling body used in fluid power systems for rapid connection and disconnection of hydraulic lines. It is commonly applied in industrial machinery, mobile equipment, and maintenance tools where reliable, leak-free connections are needed under pressures typical of SM Series components.

The PARKER SM-251-4FP is a steel-bodied coupler with a 1/4 in coupling size and 1/4"-18 female NPTF threads. It operates from -40 to 250 Deg F and features a female NPTF connection type. This SM Series body is designed for hydraulic quick-connect applications requiring durable, corrosion-resistant performance.

You can source the PARKER SM-251-4FP through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead time; we provide competitive sourcing for Parker hydraulic components without requiring local stock.

To install the PARKER SM-251-4FP, ensure the female NPTF threads are clean and apply thread sealant compatible with hydraulic fluids. Hand-tighten the coupler onto the male NPTF port, then use a wrench for final torque—avoid overtightening. Always depressurize the system before connection and follow Parker's generic guidelines for SM Series couplings.