A nut having 6 flat sides and an integral washer which extends beyond the flats or periphery.
NSN 5975-00-468-9924
NSN 5915-00-270-4790
NSN 5855-00-014-5008
NSN 6610-01-578-7771
NSN 5895-01-527-5233
NSN 6685-00-933-4122
NSN 6135-01-039-2882
NSN 5925-01-023-2996
NSN 6110-00-004-5355
NSN 5855-01-400-1590
NSN 5895-00-059-7516
NSN 6110-00-893-2349