2a thread class right-hand 2.500" thread length hexagon head style 10 thread quantity per inch steel heavy hex head structural bolt item has matching nut 94485A036 unc thread series
3a thread class right-hand 0.651" thread length hexagon head style 28 thread quantity per inch bolt, machine, hexagon head steel .250-28 unjf-3a nickel surface treated unjf thread series
3a thread class right-hand 1.471" thread length hexagon head style 0.070" hole diameter 20 thread quantity per inch bolt- full threaded, 160 ksi steel, drilled head passivate surface treated unjf thread series
3a thread class right-hand 0.425" thread length hexagon head style 0.076" hole diameter 0.315" grip length 28 thread quantity per inch unjf thread series