The present disclosure relates to a two-part adjustable potted insert to be received within an insert hole of a honeycomb panel for fastening a threaded fastener thereon. The insert comprises an outer structural member which is configured to be received within the insert hole, and an inner structural member in a releasable engagement with the outer structural member. The outer structural member comprises an external main body which defines an external surface configured to resist pull-out and torque-out to retain the outer structural member in the honeycomb panel when inserted in the insert hole, a threaded opening within the external main body which defines a bottom surface, and a locking recess formed within the bottom surface.