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 6150-01-627-0430
NSN 6610-01-088-5871
NSN 5998-01-066-9605
NSN 6220-00-929-6069
NSN 5960-01-112-6390
NSN 6685-00-159-8954
NSN 7035-00-349-8571
NSN 6150-01-202-1005
NSN 5935-01-065-2281
NSN 4140-00-177-8858
NSN 6105-01-471-8085
NSN 5998-00-345-1658