3a thread class right-hand 0.375" thread length pan no. 2 head style 24 thread quantity per inch low head; heat treated cadmium surface treated unrc thread series
3a thread class right-hand 1.314" thread length double hexagon extended washer head style 6.185" grip length 16 thread quantity per inch unjf thread series
3a thread class right-hand flush countersunk head style 0.4375" grip length 125000 single pounds per square inch shear strength cadmium surface treated unjf thread series
3a thread class right-hand 1.750" thread length flat chamfer head style 11 thread quantity per inch passivate fastener surface treated unrc thread series