A nut having 6 flat sides and an integral washer which extends beyond the flats or periphery.
Classification: Nuts of iron or steel
NSN 4140-01-152-6600
NSN 6645-01-400-2119
NSN 5910-01-502-8643
NSN 6620-00-229-2728
NSN 6105-00-204-5497
NSN 5905-00-328-1761
NSN 6105-01-083-6953
NSN 6130-01-228-3828
NSN 6105-00-835-4325
NSN 5985-00-707-3473
NSN 6685-01-413-2363
NSN 6320-01-166-3602