3a thread class right-hand 0.7500" thread length 2.3750" overall length 18 thread quantity per inch surface treatment color-black; crowned od 0.0200 in. radius nickel all external/exposed metal surfaces surface treated unf thread series
3a thread class right-hand 4.1970" overall length 0.4995" bore diameter 18 thread quantity per inch serial no. vibro etched on od of outer member, keyway in shank 0.125 in.min, 0.130 in. max w, 0.0845 in. min, 0.0895 in. max dp ball type unf thread series