Circular connectors falling under the Mil-Spec MIL-DTL-26482 Series 2 are
Connector, bayonet coupling, rear release crimp removable contacts (classes A and L (200ºC) and classes H, N, T, W and K (175°C)). Series 2, hermetic connectors are available with nonremovable solder type contacts or crimp removable terminations
MIL-DTL-26482 Series 2, bayonet coupling, rear-removable crimp contact connectors were designed as an upgrade to MIL-DTL-26482 Series 1. Series 2 connectors are intermountable and interchangeable with both solder and front-release crimp Series 1. They are also identical to the inactivated MIL-DTL- 83723 Series I connectors