3a thread class right-hand 0.277" thread length flat countersunk head style 1.500" grip length 28 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand 0.345" thread length dished hexagon head style 4.740" grip length 28 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand 0.425" thread length pan no. 2 head style 0.240" grip length 32 thread quantity per inch 3 KEYWAY5 0.655 inchmin. passivate surface treated unjf thread series