Flat, round
NSN 5895-00-797-6011
NSN 5950-00-521-9412
NSN 5910-00-422-5333
NSN 5965-00-594-3115
NSN 5895-01-333-0764
NSN 5925-00-440-5177
NSN 6320-00-284-1524
NSN 5835-00-198-4936
NSN 6320-00-139-1090
NSN 6320-00-098-2858
NSN 5960-00-044-6807
NSN 5910-01-514-0094