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 5975-01-512-7961
NSN 6620-01-008-1654
NSN 5945-01-259-2025
NSN 6135-01-292-1071
NSN 6620-00-303-9947
NSN 6610-00-003-7899
NSN 7035-01-485-9723
NSN 5855-01-079-1259
NSN 6130-01-492-6179
NSN 6110-01-392-1493
NSN 5935-01-534-6638
NSN 6685-01-524-7169