Material specification qq-a-268
A flanged cylindrical metallic item designed to be used on tubing to back up the flared end and to provide a bearing surface for the coupling nut, thereby reducing wear on the tubing flare. The inside diameter of the flanged end is countersunk to form a seat for the flare when assembled to a mating fitting.
NSN 4140-01-123-6066
NSN 5999-01-512-0377
NSN 5925-00-934-3365
NSN 5950-01-096-6280
NSN 5910-01-367-6115
NSN 6110-01-354-2885
NSN 6150-00-689-6309
NSN 5835-01-369-7837
NSN 5965-00-763-8015
NSN 5975-01-195-8702
NSN 5945-01-293-9217
NSN 5910-00-832-6925