flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 20000 single pounds per square inch shear strength oxide film or anodize surface treated
2a thread class right-hand 0.682" thread length flat countersunk head style 32 thread quantity per inch cadmium screw surface treated unc thread series
2a thread class right-hand 0.344" thread length flat chamfer head style 32 thread quantity per inch fastener is spring loaded w/a socket head unc thread series
3a thread class right-hand 0.219" thread length flat countersunk head style 0.615" grip length 32 thread quantity per inch aluminum grommet .012 in. thk on bearing surface of head cadmium surface treated unf thread series