The 2M801-007-16M16-55PA from Amphenol is 2M series, MIL-DTL-38999 series equivalent straight plug with 55 contacts. The 2M series micro-miniature circular connectors can withstand harsh environment conditions. These quick mating connectors have well-proven electrical capability to withstand extreme shock, exposure and vibration. They are designed for interconnect applications requiring high performance and reduced size and weight. These smaller, high density, light weight connectors far exceed the competition in quality and performance levels. The 2M series are superior and versatile connectors designed and tested to mil-spec standards, comparable to MIL-DTL-38999.

• More rugged keys and threads for faster mating, superior anti decoupling
• Polyphenylene sulphide (PPS) insert and fluorosilicone rubber grommet, seal
• Insulation resistance is 5000Mohm
• 2000 mating cycles for unmated connectors
• Dual-start ACME thread coupling system
• Operating temperature range from -65°C to +150°C
• Salt spray exposure of 48hour
• Aluminium alloy body material with electroless nickel plating
• Copper alloy crimp pin contacts with gold plating

The MS27467T21B35S from Amphenol is MIL-DTL-38999 Series I straight plug with 79 contacts. MIL-DTL-38999 Series I connectors are available in a wide range of shell materials and finishes with 48, 500 and 1000 hour salt spray plating exposure. These connectors offer high density contact arrangements in a miniature circular shell and combines high coupling durability. It has an improved sealing around each contact to prevent electrolytic erosion. These connectors are available in 9 shell size from 9 to 25 and are designed to withstand extreme shock, exposure and vibration.

• High reliability, moisture and corrosion resistant
• Outstanding EMI, RFI shielding protection (100MHz to 10GHz at attenuation of 50dB)
• 500 mating cycles, IP67 environmental protection
• Operates at extreme temperature range of -65°C to +200°C
• Minimum insulation resistance is 5000Mohm
• Scoop proof to eliminate the possibility of contact damage
• Quick mating, three-point bayonet coupling and 5 key/keyway mating
• Self locking connector system, breakaway lanyard release style
• Aluminium alloy body material with olive drab chromate over cadmium plating
• Copper alloy crimp socket contacts with gold plating