A nut having 6 flat sides and an integral washer which extends beyond the flats or periphery.
NSN 5998-00-852-2873
NSN 6685-01-201-9294
NSN 5920-01-219-8792
NSN 6645-01-432-0052
NSN 5915-01-188-5568
NSN 2925-00-964-7128
NSN 7035-00-549-2722
NSN 5990-00-070-0538
NSN 6130-01-336-9147
NSN 6650-01-509-8018
NSN 5985-01-145-2810
NSN 5925-00-081-9135