3a thread class right-hand 0.397" thread length flat countersunk undercut head style 28 thread quantity per inch passivate screw surface treated unjf thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.344" grip length single action installation passivate surface treated
3a thread class right-hand 0.397" thread length flat countersunk undercut head style 28 thread quantity per inch passivate screw surface treated unjf thread series
3a thread class right-hand 0.397" thread length flat countersunk undercut head style 28 thread quantity per inch passivate screw surface treated unjf thread series
3a thread class right-hand 0.331" thread length flat countersunk undercut head style 32 thread quantity per inch passivate screw surface treated unjf thread series
3a thread class right-hand 0.331" thread length flat countersunk undercut head style 32 thread quantity per inch passivate screw surface treated unjf thread series
3a thread class right-hand 0.649" thread length flat countersunk undercut head style 20 thread quantity per inch passivate screw surface treated unjf thread series
3a thread class right-hand 0.599" thread length flat countersunk undercut head style 20 thread quantity per inch passivate screw surface treated unjf thread series
3a thread class right-hand 0.599" thread length flat countersunk undercut head style 20 thread quantity per inch passivate screw surface treated unjf thread series
3a thread class right-hand flush countersunk head style 0.495" grip length 32 thread quantity per inch 108000 single pounds per square inch shear strength cadmium surface treated unjf thread series
3a thread class right-hand 0.599" thread length flat countersunk undercut head style 20 thread quantity per inch passivate screw surface treated unjf thread series
3a thread class right-hand 0.397" thread length flat countersunk undercut head style 28 thread quantity per inch passivate screw surface treated unjf thread series
3a thread class right-hand 0.397" thread length flat countersunk undercut head style 32 thread quantity per inch passivate screw surface treated unjf thread series
3a thread class right-hand 0.397" thread length flat countersunk undercut head style 28 thread quantity per inch passivate screw surface treated unjf thread series
3a thread class right-hand 0.516" thread length flat countersunk undercut head style 24 thread quantity per inch passivate screw surface treated unjf thread series
3a thread class right-hand 0.397" thread length flat countersunk undercut head style 32 thread quantity per inch passivate screw surface treated unjf thread series
3b thread class right-hand 24 thread quantity per inch color violet to purple; 1/16 inch grip variation tension application cadmium surface treated unjf thread series