(20) NIB Festo 153319 Type QSM-M7-4-I Push-In Fittings. Aliases: QSMM74I, QSM M7 4 I. Pneumatic connection 1: External thread M7. Type of seal on screwed plug: Sealing ring. Mounting position: Any. Corrosion resistance class (CRC): 1 - Low corrosion stress.
eBay