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 5930-01-646-9116
NSN 6620-01-234-1799
NSN 6645-01-333-9336
NSN 6105-01-016-6181
NSN 5950-00-932-3138
NSN 6320-00-823-2015
NSN 5925-00-389-6433
NSN 5935-00-885-7586
NSN 5915-01-167-8506
NSN 5985-01-573-7194
NSN 5945-00-268-3559
NSN 5935-01-254-5262