An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 6145-01-381-0032
NSN 2925-01-172-9209
NSN 5910-01-112-5937
NSN 6150-01-438-0969
NSN 5975-00-045-9819
NSN 6130-00-497-8419
NSN 5950-01-076-5052
NSN 5990-01-286-0601
NSN 6685-00-450-0053
NSN 5960-00-716-7655
NSN 6105-01-473-5859
NSN 5985-01-446-9355