An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 6130-01-025-0523
NSN 5960-01-421-8175
NSN 6650-01-514-0240
NSN 5998-01-417-3147
NSN 2925-01-250-2731
NSN 5965-00-285-0745
NSN 5985-01-341-8217
NSN 5905-01-216-8527
NSN 5996-01-446-5097
NSN 5985-00-823-4645
NSN 5975-00-489-6195
NSN 6220-01-104-6861