Souriau-Sunbank by Eaton Mil-DTL-38999 Series III circular connectors feature a tri-start thread that allows mating in a single rotation of the coupling ring. The unique anti-decoupling mechanism ensures that the plug and receptacle remain coupled under extreme environmental conditions. All Souriau-Sunbank by Eaton 38999 inserts feature metal clips to guarantee excellent contact retention. To suit specific applications, a variety of shell materials and finishes are available from standard aluminum to lightweight composite. Souriau-Sunbank by Eaton is the first manufacturer to offer a full QPL alternative to cadmium - Zinc-Nickel RoHS compliant.