2b thread class right-hand 1.640" overall length 0.530" overall width 56 thread quantity per inch cadmium surface treated hood, top opening w/clamp unc thread series
2b thread class right-hand any acceptable overall length any acceptable overall width cadmium surface treated straight type w/cable clamp unef thread series
2b thread class right-hand any acceptable overall length 1.438" overall width 20 thread quantity per inch nickel surface treated angle type unef thread series
2a thread class right-hand 3.938" overall length 1.438" overall width 18 thread quantity per inch cadmium surface treated straight type w/cable clamp unef thread series