Termination and panel fit
The 1587-1 is a single-end, double-turret terminal from Keystone Electronics, threaded for panel-mount installation with a 0.187" hex flange diameter. Tin-plated brass construction, 0.485" overall length with 0.360" above the board and 0.125" below the flange. The turret head diameter is 0.145".
Board thickness and mounting
The below-flange length of 0.125" accommodates a board thickness up to 0.032" — the terminal seats flush against the panel face with the threaded shank passing through the hole.