Collar has a flnage on one end; used on the heater/ac front
A straight formed fitting with identical internal ends, used to form a connection of two air conditioning-heating fittings.
NSN 6320-01-445-5893
NSN 6610-01-011-8742
NSN 2925-01-397-2495
NSN 6150-00-144-7115
NSN 5905-01-190-5568
NSN 5905-00-179-2336
NSN 5975-01-070-1267
NSN 5895-01-583-6461
NSN 5835-01-250-2939
NSN 5855-01-476-4219
NSN 5960-01-323-6432
NSN 7035-01-357-7786