What it is — insulated turret pin
The 11218 is a Keystone Electronics double-end pin turret terminal with a single turret head, insulated with a white PTFE body, and terminated via press-fit into a 0.069" (1.75mm) mounting hole. The brass contact carries a tin finish; overall length is 0.370" (9.40mm) with 0.140" (3.56mm) above the board and a turret head diameter of 0.060" (1.52mm).
