Used on f18 e/f. 3a thread class right-hand 0.572" thread length spline drive shear head head style 2.375" grip length 16 thread quantity per inch bolt-close tolerance, spline drive, cres (125 ksi fsu) drilled, short thread passivate surface treated unjf thread series
Used on f/a-18e aircraft. 3a thread class right-hand 0.763" thread length spline extended washer head style 2.240" grip length 20 thread quantity per inch unjf thread series
Used on f/a-18e aircraft. 3a thread class right-hand 0.659" thread length spline extended washer head style 1.615" grip length 24 thread quantity per inch unjf thread series