A flat metal ring with provisions for attaching nuts in predetermined spacing. for ring with nuts assembled see nut assembly,retainer ring.
NSN 6240-01-079-3704
NSN 6145-01-069-4706
NSN 6145-01-506-0672
NSN 5998-01-107-3877
NSN 6145-01-268-3463
NSN 5999-00-102-7811
NSN 6645-01-463-2198
NSN 5930-00-525-4338
NSN 6650-01-623-0129
NSN 5960-00-204-7506
NSN 2925-01-399-2765
NSN 6240-00-196-4518