2a thread class right-hand 1.082" thread length hexagon head style 16 thread quantity per inch navy special project one groove located on outer periphery of head unc thread series
2.500" inside diameter 3.490" outside diameter 0.343" major thickness straight gap ring style 6 holes equally spaced, 0.211 in. dia porm 0.218 in. dia, along 2.930 in. dia bsc anodize surface treated
3a thread class right-hand 0.341" thread length pan head style 0.490" grip length 28 thread quantity per inch cadmium surface treated unf thread series
3a thread class right-hand 0.845" thread length 18 thread quantity per inch navy special project 0.141 in. dia hole drilled 0.218 in. from shank end cadmium or zinc surface treated unjf thread series