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 5975-00-910-3461
NSN 4140-00-770-6731
NSN 6610-01-060-6165
NSN 6650-00-089-9423
NSN 6150-00-258-3761
NSN 6645-01-107-5699
NSN 6320-01-426-8947
NSN 6645-01-432-0052
NSN 5910-00-083-2583
NSN 6320-00-557-3079
NSN 7035-01-570-1095
NSN 6135-01-597-7685