Barrel rockwell c scale 38 min and @rockwell c scale 42 max
A nut of cylindrical or partly cylindrical cross-section with integral threads perpendicular to the axial centerline. Ends may be flat or flanged. An integral feature is incorporated for locking on the threads of a mating member. Excludes nut (1), self-locking, round.
Classification: Nuts of iron or steel
NSN 5920-01-258-5775
NSN 6650-00-044-1933
NSN 5915-01-121-3453
NSN 6105-01-463-7677
NSN 5930-01-101-0362
NSN 6645-00-445-8143
NSN 6240-01-435-0862
NSN 5985-01-518-6117
NSN 5999-01-397-2771
NSN 5950-01-415-1563
NSN 6130-01-531-7865
NSN 2925-01-359-9818