Six equally spaced protrusions on outter 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 5945-01-016-4123
NSN 6685-00-055-7656
NSN 5835-00-348-8549
NSN 5920-01-348-0684
NSN 5920-01-182-8745
NSN 6610-01-264-4888
NSN 5999-00-525-4320
NSN 6145-01-130-5416
NSN 5965-01-202-1007
NSN 5910-00-195-2614
NSN 6220-01-024-9444
NSN 5999-01-553-6579