Special Features:

Two of the four holes on circumference are threaded (10-32 unf-2b) and counterbored (0.321 in. X 0.090 in. Deep); the other two holes are plain (0.272 in. Min, 0.275 in. Max); a fifth hole (threaded 10-32 unf-2b) is 1.000 in. From a plain circumference hole and 0.625 in. From cove r9s center point

Properties:

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.