3a thread class right-hand 0.463" thread length flat countersunk head style 28 thread quantity per inch cadmium screw surface treated unf thread series
3a thread class right-hand 0.785" thread length flat chamfer head style 32 thread quantity per inch used on gyro stabilizer platform on lgm 30 missile unf thread series
3a thread class right-hand 0.691" thread length double hexagon w/hole head style 0.750" grip length 24 thread quantity per inch hex hqle in point o.188 in. min dia, 0.190 in. max dia chromate surface treated unjf thread series
3a thread class right-hand 0.511" thread length hexagon head style 0.076" hole diameter 0.438" grip length 18 thread quantity per inch unf thread series