Grade 8 and the material is zinc and the thread pitch in millimeters is 1.25
An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. the threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. the thread length being the controlled dimension, the grip length is not specified. a locking feature may be incorporated in the design of the head or threads. the head is not designed to be held or driven with an inserted driver or by the thumb and fingers. excludes bolt,machine; bolt,externally relieved body; bolt,internal wrenching; and screw,cap,socket head.
NSN 5999-00-035-9288
NSN 5930-01-444-4074
NSN 7035-01-641-2830
NSN 6320-01-523-4954
NSN 5895-01-523-6830
NSN 6150-01-139-5283
NSN 6150-01-468-0143
NSN 6610-01-044-4740
NSN 6150-01-578-6786
NSN 5960-01-515-4791
NSN 5910-00-070-2417
NSN 5855-01-610-9557