A nut having 6 flat sides and an integral washer which extends beyond the flats or periphery.
NSN 6105-00-053-8638
NSN 6150-01-619-6510
NSN 2925-01-055-7607
NSN 2925-00-441-8252
NSN 5960-01-267-4957
NSN 6145-00-327-4770
NSN 5935-00-232-3351
NSN 6685-00-177-5006
NSN 5835-00-177-2970
NSN 6650-00-361-8222
NSN 5950-01-188-9061
NSN 5999-01-089-6974