3a thread class right-hand 0.403" thread length pan no. 2 head style 1.365" grip length 28 thread quantity per inch cadmium surface treated unjf thread series
Used on COOLER. 2a thread class right-hand 5.500" overall length 11 thread quantity per inch stud has a square head that measures 0.375 inch across flats, and is 0.375 inch in height unc thread series
Used on fighter aircraft - first (f18 e/f). 3a thread class right-hand 0.316" thread length hexagon head style 1.240" grip length 28 thread quantity per inch unjf thread series