2a thread class right-hand 2.500" 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 5935-01-174-3669, p/n M85049/52-1-24w for the straight style, or nsn 5935-01-193-8434, p/n M85049/51-1-24w for the right angle style. unef thread series