VBM Solenoid Group Exhaust Thread

Also found in some Brasilia, the really old Expobar Classic, Fiorenzato, Grimac, Isomac, Lavazza and SAB Italia solenoid group heads. 1/4" M BSP x 1/8" F BSP, 35 mm tall, 10.5 mm around. The combined assembly that this is found in is F_1877.