A standoff, internally and/or externally, threaded on both ends with a hinge or pivot point to allow for independent movement of the ends.
NSN 5855-01-610-1766
NSN 6110-01-654-0907
NSN 5895-01-184-0758
NSN 5905-01-045-1591
NSN 6110-01-108-0215
NSN 2925-01-197-7864
NSN 6650-00-977-7533
NSN 5895-01-487-5337
NSN 6110-01-094-0822
NSN 6135-00-911-9321
NSN 6610-00-949-9792
NSN 6135-01-441-5746