2a thread class right-hand 2.125" overall length 20 thread quantity per inch 16-22 wire size pin contacts in lieu of 16-16; in order to complete the connector assembly, the user must obtain/provide the backshell. standard versions may be ordered as nsn 5935-01-171-1966, p/n M85049/52-1-16w for the straight style, or nsn 5935-01-186-5611, p/n M85049/51-1-16w unef thread series