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 6320-00-701-0437
NSN 6110-01-502-4335
NSN 5996-01-597-8445
NSN 6610-01-567-7242
NSN 6105-01-147-3487
NSN 6650-01-302-7684
NSN 6145-00-170-6872
NSN 5960-00-786-7967
NSN 5920-01-085-2205
NSN 5999-00-261-7972
NSN 6620-01-098-9866
NSN 5950-01-390-0650