An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 5945-00-501-0372
NSN 5835-01-257-5342
NSN 5920-01-093-8458
NSN 6685-01-301-8239
NSN 5930-01-281-0646
NSN 5835-00-233-6327
NSN 7035-01-042-5308
NSN 5925-01-602-5767
NSN 6105-01-044-0189
NSN 6650-01-550-5221
NSN 5930-00-666-2971
NSN 6650-01-328-8363