3 holes with 2 edm slots; no flaw, 0.2mm flaw, 0.5mm flaw; 10.5mm diameter holes
NSN 6610-01-535-0310
NSN 5905-00-142-3831
NSN 6150-01-453-1650
NSN 6145-00-249-8781
NSN 6240-01-280-5347
NSN 6610-00-899-1751
NSN 7035-01-468-6532
NSN 6145-01-197-9558
NSN 7035-01-481-8247
NSN 5996-00-014-7811
NSN 5999-00-072-9649
NSN 5945-00-256-8950