An item specifically designed to wholly, or in part, enclose the device securing the knob in position. It may have reference markings constant with functional requirements.
Classification: Parts and accessories (not specified or included elsewhere in this chapter) for machines, appliances, instruments or apparatus of chapter 90
NSN 5996-00-134-0877
NSN 6220-00-857-7565
NSN 6650-00-578-6543
NSN 5990-00-499-9816
NSN 7035-00-884-8366
NSN 6650-01-442-7893
NSN 6145-01-187-2034
NSN 5975-01-446-6074
NSN 5996-01-113-8944
NSN 5990-01-272-4091
NSN 5855-01-593-6422
NSN 5925-01-044-5508