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 5996-01-440-0634
NSN 5930-00-144-4994
NSN 6110-01-038-2028
NSN 4140-01-299-4969
NSN 5985-01-415-8534
NSN 5910-01-268-1226
NSN 6150-01-467-3571
NSN 6150-00-201-9583
NSN 5835-00-466-8544
NSN 6620-01-265-0632
NSN 5960-01-355-2968
NSN 5935-01-050-3027