For navy nuclear propulsion plant products only. As differentiated by free from mercury contamination
A fitting used with a union nut and thread piece to form a union.
NSN 6145-01-231-1397
NSN 6145-01-293-5463
NSN 4140-00-521-0380
NSN 5905-01-025-5169
NSN 5915-00-271-1838
NSN 4140-01-281-0222
NSN 5965-00-827-9680
NSN 5999-01-580-0934
NSN 5895-01-495-1061
NSN 5925-01-393-8257
NSN 5960-00-230-7404
NSN 6610-01-419-4123