An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 5975-00-516-1771
NSN 5965-01-349-7246
NSN 6110-00-917-3805
NSN 6645-01-563-8763
NSN 5855-00-149-0766
NSN 5960-01-303-5884
NSN 5905-00-035-8981
NSN 6610-01-100-3662
NSN 6610-01-384-1587
NSN 6145-00-240-4532
NSN 5905-01-415-2902
NSN 5945-00-812-1168