MS3106A20-27S Circular Connector, MIL-DTL-5015 Series, Straight Plug, 14 Contacts. The MS3106A20-27S from Amphenol is MIL-DTL-5015 series straight plug with 14 contacts. MIL-DTL-5015 series connectors are available in a wide range of shell materials and finishes with 48 and 500 hour salt spray plating exposure. These connectors offer high density contact arrangements in a miniature circular shell and combines high coupling durability in medium to heavy weight cylindrical construction. It has a well-proven electrical capability and is designed to withstand extreme shock, exposure and vibration.