3a thread class right-hand 0.312" grip length 28 thread quantity per inch 95000 single pounds per square inch shear strength solid film lube surface coating unjf thread series
Used on coast guard hu25 panels and lip assy apron after nacelle. 3a thread class right-hand 0.323" thread length hexagon head style 32 thread quantity per inch passivate surface treated unjf thread series
Used on e3a,ke3a. 3a thread class right-hand 0.400" thread length flat countersunk head style 1.563" grip length 28 thread quantity per inch passivate surface treated unjf thread series