Shouldered one surface 0.125 in. Lg, grooved one side 0.047 in.
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 2925-01-633-0225
NSN 5965-00-340-6790
NSN 4140-00-229-8467
NSN 6645-01-527-9265
NSN 6610-00-249-9447
NSN 5975-01-032-9705
NSN 5975-01-107-5884
NSN 5950-01-502-7019
NSN 5965-01-161-8097
NSN 5920-01-080-7212
NSN 6110-01-335-0580
NSN 6150-01-473-4430