Style is mount type but round in shape.
No other part numbers with same form, fit, and function found.
An item which sacrificially corrodes when coupled to a more noble metal in a conducting medium.
NSN 5835-01-321-7895
NSN 6135-00-299-6918
NSN 5910-01-588-0767
NSN 5945-00-399-0716
NSN 5965-01-168-0150
NSN 6220-01-537-1951
NSN 5895-00-937-6793
NSN 5996-01-016-2724
NSN 6130-01-548-7802
NSN 6650-01-462-4749
NSN 5835-00-275-0584
NSN 6320-01-323-7565