With two grooves 1/4 @in. Wide, 1/16 in. Deep, by 13/16 in. Long, 180 degrees apart. W/two hex socket set screws 3/8-16x7/16 in. Long
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 5990-01-268-6767
NSN 6130-00-253-3901
NSN 5998-01-170-4106
NSN 5895-01-259-4385
NSN 7035-01-400-3666
NSN 5920-01-321-4327
NSN 6145-01-100-4151
NSN 6150-01-104-4323
NSN 5905-01-098-0580
NSN 5999-01-203-0029
NSN 2925-00-394-2332
NSN 5945-01-018-4941