The TE Connectivity / Deutsch D38999/20WH21PN is a male Straight, Circular CRIMP GOLD pin Connector and a Square Flange Receptacle Size 16D. It has 21 Positions and a current rating of 13 A. It has high-density contact arrangements in a miniature circular shell. Originally designed for the high-performance requirements of military and commercial aircraft, these circular connectors are perfect for applications requiring extremely reliable interconnections.