JIS connection stands for "Japanese Industry Standard". These connectors are mainly used as adapters for machines from Japan and Korea. These are designed with a 30 degree angle and 60 degree conical coupling and usually with BSP threads. JIS plugs are a simple and economical way to protect threads, holes, hoses, pipes and machines. Can be used both internally and externally. There are also other adapters and connections such as bushings, swivels, high pressure washers and special solutions.