Used on f-15s acft. 3a thread class 0.2500" thread length 0.9750" overall length 28 thread quantity per inch stud cam follower cam follower unf thread series
2a thread class right-hand 0.3125" thread length 1.1875" overall length 24 thread quantity per inch means of relubrication, female hex drive in lieu of slot. cam follower unjf thread series
2a thread class right-hand 0.4370" thread length 1.2340" overall length 24 thread quantity per inch cadmium end plate surface treated cam follower unf thread series