This part of ISO 12151 specifies the general and dimensional requirements for the design and performance of hose fittings made of carbon steel with 60° cone ends for hose sizes 5 to 51 inclusive, in accordance with ISO 4397. These hose fittings (see Figure 1 for a typical example) are for use in hydraulic fluid power systems with hoses that meet the requirements of the respective hose standards and in general applications with suitable hoses. NOTE 1 Other materials can be supplied as agreed between the manufacturer and user. NOTE 2 For hose fittings used in hydraulic and pneumatic braking systems on road vehicles (as defined in the scope of ISO/TC 22), see ISO 4038, ISO 4039-1 and ISO 4039-2.