ISO 6020-3:2015 establishes metric mounting dimensions for single rod compact series hydraulic cylinders with bores from 250 mm to 500 mm for use at 16 MPa (160 bar), as required for interchangeability of commonly used hydraulic cylinders. NOTE 1 This part of ISO 6020 allows manufacturers of hydraulic equipment flexibility in the design of metric cylinders and does not restrict technical development, but does provide basic guidelines. NOTE 2 The compact series dimensions are most applicable to square-head cylinders. ISO 6020-3:2015 applies only to the dimensions of manufactured products. It does not apply to their functional characteristics.