2a thread class right-hand 2.125" overall length 18 thread quantity per inch in order to complete the connector assembly, the user must obtain/provide the backshell, standard versions may be ordered as nsn 5935-01-183-6491, p/n M85049/52-1-20w for the straight style, or nsn 5935-01-186-5610, p/n M85049/51-1-20w for the right angle style unef thread series