FF-S-210B, FEDERAL SPECIFICATION: SETSCREWS: SQUARE HEAD (INCH) AND SLOTTED HEADLESS (INCH AND METRIC) (16 JUL 1981) {NO S/S DOCUMENT]

FF-S-210B, FEDERAL SPECIFICATION: SETSCREWS: SQUARE HEAD (INCH) AND SLOTTED HEADLESS (INCH AND METRIC) (16 JUL 1981) {NO S/S DOCUMENT]., This specification covers square head (inch) and slotted headless setscrews (inch and metric). See 6.1 for recommended style usage limitation.