Five holes threaded 0.250-unf for ms21209f4-20 helicoil insert
No other part numbers with same form, fit, and function found.
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: Articles of aluminum nesoi
NSN 6650-01-373-5912
NSN 5930-00-980-3738
NSN 5998-01-421-3503
NSN 6150-01-660-9297
NSN 7035-01-457-5645
NSN 5960-00-810-8560
NSN 7035-00-946-2642
NSN 5935-01-565-0319
NSN 5975-01-476-7472
NSN 6135-01-544-8463
NSN 5990-00-788-3829
NSN 6135-00-162-2437