A FPX-08-08 1/2" hose x 1/2" NPSM swivel female is a type of hydraulic fitting that consists of two parts: a hose fitting with a 1/2" inside diameter and a female swivel fitting with a 1/2" size and National Pipe Straight Mechanical (NPSM) threads. The NPSM thread is a straight thread with a 60-degree flank angle and is commonly used in low-pressure hydraulic systems. The female swivel fitting has a cone-shaped seat that mates with a corresponding male fitting, providing a reliable seal in low-pressure hydraulic applications. The swivel design allows the fitting to rotate and pivot, making it easier to install.