3a thread class right-hand 0.567" grip length 20 thread quantity per inch 125000 single pounds per square inch shear strength white paint on head unjf thread series
3b thread class right-hand flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.125" grip length 16 thread quantity per inch 125000 single pounds per square inch shear strength furnished w/o bolt cadmium expander surface treated unjc thread series
3a thread class right-hand 0.628" thread length fillister head style 18 thread quantity per inch two holes drilled in threaded portion 90 degrees apart; center of holes 0.179 min passivate surface treated unjf thread series
3b thread class right-hand flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.125" grip length 18 thread quantity per inch furnished without bolt cadmium expander surface treated unjc thread series