A FJX-16-16W | 1" hose x 1" JIC 37° female swivel is a type of hydraulic fitting that consists of two parts: a hose fitting with a 1" inside diameter and a JIC 37° female swivel fitting with a 1" tube size and a nominal thread size of 1-5/16"-12. This hydraulic fitting features a W series fitting on the hose end, which has a different shape than the standard JIC 37 degree fitting. The W series fitting has a flat seat and a metal-to-metal seal, which provides a more reliable seal at high pressures. This fitting is commonly used in high-pressure hydraulic applications and can be made from various materials to suit specific application requirements.