Holes in periphery counterbored 0.200 in. Deep by 0.298 to 0.302 in. Dia
A nut, circular in shape, which may have wrenching facilities such as flats, holes, protrusions, slots or splines in or on the periphery or in the face opposite the bearing surface. For items having a thickness (or height) exceeding two times the outside diameter, use post, electrical-mechanical equipment. See also nut (1), plain, knurled. (when height or thickness and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)
Classification: Nuts of iron or steel
NSN 5960-00-275-2990
NSN 6220-01-512-7392
NSN 5945-00-004-9503
NSN 2925-01-174-6786
NSN 6145-00-414-4840
NSN 5950-01-164-5687
NSN 6645-01-496-9868
NSN 5999-00-409-9491
NSN 6240-01-469-0074
NSN 5945-00-541-7833
NSN 5920-01-131-1859
NSN 6105-01-079-2379