MS3108E20-29S is a MIL-DTL-5015 Series I circular connector designed for rugged military and industrial applications. This 90° plug features a shell size 20 with 17 size 16 socket contacts arranged in a 20-29 configuration, utilizing solder cup termination with hard silver contact plating. The connector incorporates threaded coupling with an endbell clamp and bushing design, and is constructed with an aluminum alloy shell featuring olive drab chromate coating over cadmium plating. Key electrical specifications include a contact rating of 22 A at +20°C, contact resistance of 6 mO, and test voltage of 1600 Vrms. With IP65 protection rating, 500 hours salt spray resistance, and an operating temperature range of -55°C to +125°C, this connector is well-suited for demanding aerospace, defense, and industrial equipment applications.