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. Threads 8V2, 11V1, 13V2, 16V1, 17V2, 17V3, 19V1, should be verified according ANSI B1.2. Threads 10V1, 15V1, 17V1, and 20V1, should be verified according to tolerances extracted from ISO 1502.