MRC:
Those unusual or unique characteristics or qualities of an item not covered in the other requirements and which are determined to be essential for identification.FEAT
Special Features:
Screw, pan head, cruciform recess, titanium alloy 6al-4v, full thread, self-locking and nonlocking; nom thread .1380-32, a diameter maximum .270, min .256; d diameter maximum .138; h maximum .097, min .087 r maximum .010, min .005 p rad min .015, s ref .207; u maximum .039; recess size 2; per ams4928 or ams4967, aluminum coated screw