ISO 4570-1:1977

Tyre valve threads — Part 1: Threads 5V1, 5V2, 6V1 and 8V1

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