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 6610-01-442-3509
NSN 2925-00-617-0826
NSN 7035-00-275-5604
NSN 5835-01-328-6626
NSN 2925-00-526-4541
NSN 5895-00-599-4394
NSN 6130-01-212-9077
NSN 5925-01-517-7229
NSN 5930-00-314-5137
NSN 5930-01-230-8807
NSN 5998-00-062-5504
NSN 5999-01-494-3005