Next higher assembly is instrumented sheave
A rigid or flexible item of various shapes attached to a structure for the purpose of providing access for inspection, service, replacement of components and/or adjustments or mounting operations. It is designed to be attached by means of bolt holes, slots, mounting ears, tabs, and the like. To permit access, the mounted cover requires partial or complete removal. It may include an observation window. For items permanently attached by hinges and the like, see door, access (as modified). Excludes all covers not specifically designed to provide access for the purposes listed above.
Classification: Other articles of iron or steel not wire nesoi
NSN 2925-01-058-1718
NSN 5965-00-849-1313
NSN 5920-00-858-8619
NSN 5855-01-319-9757
NSN 6320-01-352-5653
NSN 7035-01-566-0779
NSN 6130-01-441-4175
NSN 6685-01-379-4453
NSN 6240-00-060-7298
NSN 6240-01-039-2125
NSN 2925-01-417-6815
NSN 5930-00-216-7511