Ext circ groove, 0.250 in. Radius
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 6620-01-652-4349
NSN 6650-01-559-9689
NSN 6620-00-542-0529
NSN 5998-01-113-9036
NSN 5835-01-281-7281
NSN 5999-00-764-3666
NSN 6110-00-804-4830
NSN 6645-01-303-8336
NSN 5960-01-142-1995
NSN 6645-01-534-3148
NSN 6620-01-452-8418
NSN 6645-01-449-8100