SAE J 1401

This SAE Standard specifies the performance tests and requirements for hydraulic brake hose assemblies used in the hydraulic braking system of a road vehicle. It also specifies the methods used for identification of the hose manufacturer. This document applies to brake hose assemblies made of a hose fabricated from yarn and natural or synthetic elastomers and assembled with metal end fittings for use with nonpetroleum-base brake fluids as specified in SAE J1703 and SAE J1705. The nominal internal diameter of the brake hose shall fall within one of the following values: a. 3.5 mm or less (1/8 in or less) b. 4 to 5 mm (3/16 in).