An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 5905-01-250-4734
NSN 6150-00-249-7955
NSN 2925-01-218-5556
NSN 6620-01-492-9508
NSN 5950-01-162-4938
NSN 5960-00-190-5817
NSN 6610-00-213-8544
NSN 6320-00-506-2314
NSN 5835-01-442-6482
NSN 6145-01-500-7108
NSN 6130-01-265-5094
NSN 5945-01-183-6793