3/4-10 nc threads for 1 in. Plug
An item which sacrificially corrodes when coupled to a more noble metal in a conducting medium.
NSN 6145-00-967-3143
NSN 5930-00-995-0740
NSN 6135-01-452-2421
NSN 5945-00-950-5573
NSN 5895-01-330-7553
NSN 6145-01-367-6503
NSN 6110-01-352-4891
NSN 6135-00-951-3426
NSN 5985-00-778-2887
NSN 6320-00-242-3300
NSN 5895-00-166-7989
NSN 5990-00-064-4570