National Stock Number
6650-01-005-7873
National Stock Number (NSN) 6650-01-005-7873, or NIIN 010057873, (iris diaphragm,optical instrument) has an unknown assigned date. NIIN 010057873 was cancelled on May 31, 1997, with a cancelled status of "Item is Cancelled - Inactive." There is no known replacement specified for this stock number. This NSN does not replace any other NSNs.
There are no manufacturer part numbers associated to this NSN.
This part number has not been procured by the US Government in over 5 years.
This NSN is assigned to Item Name Code (INC) 22592. [AN ADJUSTABLE ITEM OF THIN, OVERLAPPING OPAQUE PLATES WHICH ARE ACTUATED BY A RING OR OTHER DEVICE SO AS TO CHANGE THE DIAMETER OF A CENTRAL OPENING, FOR CONTROLLING THE INTENSITY OF TRANSMITTED ILLUMINATION. IT IS USUALLY EMPLOYED TO REGULATE THE APERTURE OF A LENS IN MICROSCOPES, AND OTHER OPTICAL INSTRUMENTS.]. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 6650010057873 does not contain precious metals.
This information was last updated on Aug 01, 2025.