Housings-Assemblies: Type - Circular Receptacle; Terminal Contacts - Solder Type Inserts (not included); Shell Size - Size 28; Mating Connection - Male Thread; Mounting - Panel Mount, Flanged w/Mounting Holes; Back Shell Thread Size - Without Fitting Threads; Material - Body - Aluminum; Finish - Body - Olive Drab/Green Chromate; Keying - Polarizing Key In Front; Additional Information - Solid Shell Construction; Manufacturer Model - MS3102A; Manufacturer Series - 97 Series