ISO 4570-2:1979

Tyre valve threads — Part 2: Threads 9V1, 10V2, 12V1, 13V1

Specifies limit dimensions and tolerances for type valve threads. The designation of valve threads shall be given in table 1. The profile is shown in the figure together with the nut and srew diameters. Table 2 gives limit dimensions for screws and nuts.