A nut having 6 flat sides and an integral washer which extends beyond the flats or periphery.
Classification: Nuts of iron or steel
NSN 4140-01-604-9981
NSN 5999-01-152-7178
NSN 6135-00-078-9931
NSN 5950-01-438-3626
NSN 4140-01-383-7274
NSN 6320-00-994-0179
NSN 6320-00-089-9426
NSN 5855-00-631-4565
NSN 6150-01-652-7680
NSN 5996-00-325-6285
NSN 4140-01-568-9532
NSN 5998-01-051-4159