The MS3102R20-27P is a MIL-DTL 5015 Series I circular threaded pin receptacle connector featuring a shell size 20 with 14 size-16 solder cup contacts arranged in a 20-27 configuration. The connector is rated for 22 A per contact at +20 °C (68 °F) with a contact resistance of 6 mO and hard silver plating on copper alloy contacts. It provides 1600 Vrms test voltage, insulation resistance greater than 1000 MO, and operates across an ambient temperature range of -55 °C to +125 °C with IP65 ingress protection per DIN 40 050. The aluminum alloy shell features olive drab chromate coating over cadmium plating, neoprene insulator and grommet material, and supports 500 minimum mating cycles with 500 hours salt spray resistance. This connector is commonly used in aerospace, military, and industrial applications requiring reliable high-current signal and power distribution in harsh environments.