0.089 in. Hole drilled through and 4-40 unc-3b thread through on 0.593 in. Bolt circle
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 6130-01-163-8022
NSN 7035-01-403-2841
NSN 5855-01-596-0879
NSN 5996-01-212-3066
NSN 5998-01-407-4720
NSN 5998-00-285-3186
NSN 7035-01-518-9610
NSN 5925-00-545-8022
NSN 5910-00-817-5227
NSN 5985-01-321-7693
NSN 6240-00-787-8329
NSN 5945-01-394-2206