flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.146 mils grip length 26000 single pounds per square inch shear strength chromate surface treated
3a thread class right-hand flush countersunk head style grit blast top of head hi-kote 2, solid film lube on thread end per hi-shear spec 292, color light blue on thread end unjf thread series
3a thread class right-hand flush countersunk head style 0.870" grip length 24 thread quantity per inch 96000 single pounds per square inch shear strength unjf thread series
3a thread class right-hand flush countersunk head style 0.620" grip length 5380 double pounds per square inch shear strength powder blast top of head, color black on thread end unjf thread series
3a thread class right-hand flush countersunk head style 0.370" grip length 5380 double pounds per square inch shear strength powder blast top of head with color black on thread end unjf thread series
3a thread class right-hand 0.625" thread length flat chamfer head style 13 thread quantity per inch passivate fastener surface treated unrc thread series
3a thread class right-hand 0.589" err default flat countersunk head style 20 thread quantity per inch passivate fastener surface treated unc thread series
