6.040 inch id transition to 4.500 inch id offset by 0.678 inch; specific matl is beryllium copper uns c17200; protective treatment per ams 2404e, cl 3, 0.0020 to 0.0025 thk
No other part numbers with same form, fit, and function found.
An item constructed to establish the necessary accommodations to connect two or more items, one or more being insulators, whose physical design and/or function will not normally warrant their connection.
NSN 4140-00-469-2344
NSN 5910-00-222-7310
NSN 5975-01-104-4863
NSN 5999-01-116-1691
NSN 5895-01-101-8687
NSN 6145-01-220-0118
NSN 5855-00-560-0110
NSN 6130-01-337-9866
NSN 6645-00-585-1840
NSN 5915-01-009-4262
NSN 6645-01-425-1673
NSN 6150-00-069-5099