Chromic acid dipped
A nut having 12 drive points, 24 sides, and an integral washer which extends beyond the points or periphery. An integral feature is incorporated for locking on the threads of a mating member.
Classification: Nuts of iron or steel
NSN 6240-01-444-1673
NSN 5925-01-350-1847
NSN 5905-01-437-8600
NSN 5935-01-458-7408
NSN 6105-01-068-4366
NSN 6220-00-631-1734
NSN 6135-00-062-5080
NSN 6610-01-466-9058
NSN 5965-00-706-7005
NSN 6130-00-407-8109
NSN 6685-00-101-7197
NSN 6110-01-567-5732