An externally threaded fastener bent approximately 180 degrees (3.141 radians) in the shape of the letter u and with both ends threaded.
NSN 6145-00-465-1641
NSN 5965-01-218-5003
NSN 6620-01-376-3744
NSN 5996-00-827-2094
NSN 5999-01-354-7621
NSN 5935-01-099-1662
NSN 6130-00-516-3559
NSN 5895-01-584-1180
NSN 6130-00-706-2530
NSN 6240-01-542-8886
NSN 6610-01-457-1974
NSN 6220-01-468-1969