3a thread class right-hand flush countersunk head style 0.630" grip length 0.190 in. dia by 0.312 in. lg thd stud extending from top of head cadmium surface treated unf thread series
1.047" inside diameter 1.129" outside diameter 0.048" major thickness special flat ring style 185000.0 pounds per square inch yield strength rating passivate surface treated
2a thread class right-hand 0.437" thread length hexagon extended washer head style 28 thread quantity per inch passivate surface treated unf thread series
3a thread class right-hand 0.374" thread length hexagon head style 0.051" hole diameter 0.234" grip length 32 thread quantity per inch unf thread series