2a nut thread a thread class right-hand nut thread a 4.500" nut thread a thread length 19.200" overall length 4 nut thread a thread quantity per inch unc nut thread a thread series
3a nut thread thread class right-hand nut thread 0.255" thread length 1.000" overall length 28 stud thread thread quantity per inch locking ring cres comp 410 per ams 5504 or ams 5613 or cres comp 420 per ams 5506 or ams 5621 cadmium surface treated locked in unjf nut thread thread series
3a thread class right-hand flush countersunk head style 0.865" grip length 20 thread quantity per inch 108000 single pounds per square inch shear strength cadmium surface treated unjf thread series
2a thread class right-hand 0.620" thread length hexagon head style 20 thread quantity per inch undercut below shoulder 0.366 inch min, 0.376 inch max dia; 0.060 inch long cadmium surface treated unf thread series
3a thread class right-hand 1.677" grip length 20 thread quantity per inch 108000 single pounds per square inch shear strength cadmium surface treated unjf thread series