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 6145-01-488-6737
NSN 6645-01-535-7136
NSN 5998-01-608-0017
NSN 5998-01-381-2536
NSN 5990-01-236-8399
NSN 5996-01-290-6926
NSN 5985-00-450-9398
NSN 5855-00-631-4565
NSN 5965-01-421-1244
NSN 5950-01-195-8451
NSN 7035-01-095-9322
NSN 2925-01-300-6602