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 5960-01-051-1454
NSN 5996-00-311-0638
NSN 5915-01-312-0530
NSN 5985-01-020-8259
NSN 6620-00-051-7666
NSN 5855-00-293-4708
NSN 4140-01-260-8106
NSN 6220-00-422-9972
NSN 5999-00-790-7978
NSN 5996-01-432-2356
NSN 5945-00-554-9351
NSN 6130-01-373-8469