An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 6320-01-396-2080
NSN 5999-01-127-5862
NSN 5920-00-513-4546
NSN 6220-01-501-7221
NSN 5855-01-425-1330
NSN 5905-01-218-2887
NSN 6685-01-399-6686
NSN 5895-01-422-7049
NSN 5855-00-944-0949
NSN 6130-01-413-8376
NSN 5999-00-513-7763
NSN 6220-00-108-8598