An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 5990-00-127-2306
NSN 6685-01-233-2489
NSN 5935-00-789-5485
NSN 5925-00-810-0525
NSN 6685-00-824-2354
NSN 6130-00-681-1496
NSN 6130-01-424-1217
NSN 6145-01-236-7644
NSN 5925-01-291-1525
NSN 6150-00-456-2025
NSN 6645-00-720-3953
NSN 5920-01-470-5835