Used on aircraft,eagle f-15. 3a thread class right-hand 0.589" thread length double hexagon w/hole head style 0.055" hole diameter 0.490" grip length 24 thread quantity per inch passivate surface treated unjf thread series
2a thread class right-hand 0.066" thread length flat countersunk head style 32 thread quantity per inch passivate screw surface treated pozidriv unc thread series
2a thread class right-hand 0.375" thread length flat chamfer head style 20 thread quantity per inch head vertically knurled passivate fastener surface treated unc thread series
2a thread class right-hand 0.375" thread length flat chamfer head style 32 thread quantity per inch head vertically knurled passivate fastener surface treated unf thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 26000 single pounds per square inch shear strength anodize or chromate surface treated
3a thread class right-hand 0.380" thread length oval countersunk head style 0.178" grip length 32 thread quantity per inch passivate surface treated unjf thread series
3a thread class right-hand 0.880" thread length flat chamfer head style 0.047" hole diameter 32 thread quantity per inch cadmium surface treated unc thread series
2a thread class right-hand 1.339" thread length double hexagon extended washer head style 18 thread quantity per inch triangular /tap-tite/ thd unc thread series
right-hand 0.381" thread length double hexagon w/hole head style 0.042" hole diameter 0.070" grip length 32 thread quantity per inch nickel or nickel surface treated uns thread series