Brass
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 6105-01-010-2801
NSN 5855-01-412-4623
NSN 6135-01-384-7155
NSN 6110-00-334-0230
NSN 6320-00-456-2092
NSN 6145-01-571-7928
NSN 6320-00-790-4844
NSN 5960-00-021-5618
NSN 2925-00-969-8340
NSN 6650-01-254-9803
NSN 2925-01-318-8853
NSN 7035-00-679-9027