2a thread class right-hand 0.438" thread length dished hexagon head style 0.812" grip length 16 thread quantity per inch cadmium surface treated unc thread series
2a thread class right-hand 0.118" thread length flat countersunk head style 48 thread quantity per inch passivate screw surface treated unc thread series
3a thread class right-hand 0.850" thread length bevel-conical head style 18 thread quantity per inch locking element shall meet the requirements of mil-f-18240 except the temperature shall be 300deg cadmium surface treated unjf thread series
3b thread class right-hand flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.115" grip length 24 thread quantity per inch furnished without bolt anodize sleeve surface treated unjf thread series
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.251" grip length rivet may be slosh cleaned before installation cadmium sleeve surface treated
flush (flat) countersunk (included angle - less than 135 deg w or w/o chamfer) head style 0.251" grip length rivet mat be slosh cleaned before installation cadmium sleeve surface treated