A nut having 12 drive points, 24 sides, and an integral washer which extends beyond the points or periphery.
Classification: Nuts of iron or steel
NSN 6610-01-490-2020
NSN 4140-01-300-9456
NSN 6145-01-386-6762
NSN 5990-01-110-1979
NSN 2925-00-406-2835
NSN 5855-01-333-7108
NSN 5930-01-025-9325
NSN 5895-01-449-1371
NSN 5910-01-629-5101
NSN 5930-01-504-5289
NSN 5945-01-469-9064
NSN 6320-00-731-6134