5340-00-490-2051 RETAINER,HELICAL COMPRESSION SPR Index 5340-00-490-2056 CATCH,FLUSH

National Stock Number:
6650-00-490-2052

Federal Supply Class:
6650

National Item Identification Number:
004902052

Description:
IRIS DIAPHRAGM,OPTICAL INSTRUMEN

Detail:
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.


Manufacturer Information:
320473182577RAYTHEON COMPANY


Techincal Specification:
OVERALL WIDTH1.625 INCHES NOMINAL
MATERIALCOPPER


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