2a thread class right-hand 0.875" thread length square head style 0.625" grip length 18 thread quantity per inch cadmium or zinc surface treated unc thread series
3a thread class right-hand 0.750" thread length 2.666" overall length 24 thread quantity per inch cadmium or zinc surface treated round, closed unf thread series
3a thread class right-hand 0.328" thread length hexagon head style 2.375" grip length 28 thread quantity per inch cadmium threads surface treated unf thread series