3a thread class right-hand 0.154" thread length headless (setscrew) head style 28 thread quantity per inch diameter of head min. 0.244in. max 0.250in. thd in center of slotted hd 0.063in. dia unf thread series
Used on oa15720 mk26 mod0 gmls. 3a thread class right-hand 0.438" thread length 20 thread quantity per inch locking element-nonmetallic patch zinc surface treated unc thread series
Used on aircraft model s3. 3a thread class right-hand 0.062" thread length headless (setscrew) head style 80 thread quantity per inch passivate surface treated unf thread series
3a thread class right-hand 0.375" thread length flat chamfer head style 28 thread quantity per inch navy special project 96 dp diamond raised knurl unf thread series
2a thread class right-hand 0.375" thread length 32 thread quantity per inch headless; internal socket drive; self-locking device inserted in thread; locking insert max. temperature is 250 deg. fahrenheit passivate surface treated unf thread series
3a thread class right-hand 0.133" thread length headless (setscrew) head style 40 thread quantity per inch passivate surface treated unjc thread series