ecx ball stud alternate?

[Joshnewb]

looking for a ball stud with 4.3mm ball and m4 threads

anyone know of any possibilities?

 

[i_r_beej]

When I switched to RPM heavy-duty rod ends I noticed that they were also compatible with older Associated ballstuds like those used on B4/T4 cars. However, the threads are 4-40.