A nut having 6 flat sides and an integral washer which extends beyond the flats or periphery.
NSN 5965-01-024-3532
NSN 5920-01-379-7475
NSN 6130-01-281-7268
NSN 5895-00-045-4877
NSN 2925-00-626-5027
NSN 5965-01-535-0428
NSN 6105-00-951-3138
NSN 5915-01-319-6279
NSN 6130-00-834-0142
NSN 6110-01-097-2501
NSN 6610-01-232-4802
NSN 5915-00-800-9590