Parker 10243-4-4 Female Rigid Hydraulic Hose Fitting

Product Description

The PARKER 10243-4-4 is a female rigid hydraulic hose fitting designed for use in high-pressure fluid transfer systems. Built from steel, this straight, threaded fitting features an NPTF (National Pipe Taper Fuel) thread size of 1/4-18 and accepts hoses with a 0.25 inch inside diameter. The NPTF thread form creates a pressure-tight mechanical seal without relying solely on sealant tape or compound. At 1.78 inches in overall length and sized at 4 mm hose designation, this fitting is part of Parker Series 43 and is installed by licensed hydraulic system technicians, industrial mechanics, and fluid power professionals.

This fitting is suited for use in mobile hydraulic equipment, industrial machinery, and fluid power applications where a secure, leak-free hose termination is required. It is designed as a straight, female rigid end fitting, making it appropriate for fixed-line connections at ports, cylinders, valves, or manifolds. The 11/16 inch hex size allows installation with standard open-end or combination wrenches. Applications include both OEM assembly and field service replacement scenarios.

Key Features

• NPTF 1/4-18 thread form provides a pressure-tight seal at the connection point
• Steel construction for durability in hydraulic service environments
• Straight shape for direct, in-line hose-to-port connections
• 0.25 inch hose inside diameter with 4 mm hose size designation
• 11/16 inch hex size for installation with standard wrenches
• 1.78 inch overall length suits compact plumbing configurations

Compatibility

Designed for use with Parker hose series 187 TC, 187 ST, 302, 304, 387 TC, 387 ST, 422, 424, 426, 436, 471TC, 471ST, 472TC, 482TC, 482ST, 487 TC, 487 ST, 722 TC, 722 ST, 787 TC, 787 ST, 797 TC, 797 ST, and 881 hoses.

Installation Notes

Installation should be performed by a qualified hydraulic technician or fluid power mechanic familiar with NPTF thread assembly practices. Depressurize and isolate the hydraulic circuit fully before removing or installing any fitting. NPTF threads are designed to seal on the thread form itself; inspect threads for damage before assembly and follow the fitting manufacturer torque guidelines for the specific port material. Ensure hose ends are cut cleanly and properly assembled before attaching to this fitting to prevent leaks under pressure.