3a thread class right-hand flat chamfer head style 28 thread quantity per inch retainer nut thread dia. 0.375-24unf-2a: head vertically knurled anodize head surface treated unf thread series
Used on f16-a/b/c/d. 3a thread class right-hand 0.589" thread length spline extended washer head style 1.105" grip length 24 thread quantity per inch requested name-bolt, shear passivate surface treated unjf thread series
3a thread class right-hand 0.276" thread length pan no. 2 head style 32 thread quantity per inch bolt, pan head, self-locking optional unjc thread series