TE Connectivity AMP connector back plates

thingiverse

This style of connectors allows mounting without nuts, and eliminates the need to stock threaded insert versions. Mounting connectors without nuts makes inventory management easier. This style of connector is ideal for projects that require a high degree of flexibility. By eliminating the need for threaded inserts, designers can focus on more critical aspects of their project. The absence of nuts also reduces the overall weight of the assembly.