3a thread class right-hand 0.938" thread length dished hexagon head style 1.928" grip length 28 thread quantity per inch passivate surface treated unjf thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.120" grip length 112000 single pounds per square inch shear strength single action fastener installed with a single action tool aluminum mechanical lock surface treated
3a thread class right-hand 0.425" thread length flat countersunk head style 1.052" grip length 28 thread quantity per inch passivate surface treated unjf thread series