An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 5945-01-546-4654
NSN 5998-01-383-3410
NSN 6105-00-144-1754
NSN 5905-01-538-6603
NSN 6145-01-170-6398
NSN 5895-01-168-8264
NSN 6685-01-474-2254
NSN 5990-01-063-2532
NSN 5975-01-603-5844
NSN 6685-01-602-7881
NSN 5935-01-299-9705
NSN 6145-01-028-9984