Used on f18 e/f. fastener - high strength quick release type, c'sunk head, sleevebolt/retaining ring assembly internal thread, double lead 0.2500-28-unjf-3b passivate surface treated
Used on f18 e/f. 3a thread class right-hand 0.425" thread length flat countersunk head style 0.4275" grip length 28 thread quantity per inch bolt, 100 deg reduced head, gear drive recess chamfered end - chamfer plus incomplete threads not to exceed 2 thread pitches passivate surface treated unjf thread series
Used on f18 e/f. 3a thread class right-hand 0.345" thread length flat countersunk head style 0.240" grip length 32 thread quantity per inch bolt, 100 deg reduced head, gear drive recess chamfered end - chamfer plus incomplete threads not to exceed 2 thread pitches passivate surface treated unjf thread series
Used on f18 e/f. 3a thread class right-hand 0.345" thread length flat countersunk head style 0.3025" grip length 32 thread quantity per inch bolt, 100 deg reduced head, gear drive recess chamfered end - chamfer plus incomplete threads not to exceed 2 thread pitches passivate surface treated unjf thread series