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National Stock Number:
6650-01-367-4989
Federal Supply Class:
6650
National Item Identification Number:
013674989
Description:
RING,RETAINING,OPTICAL ELEMENT
Detail:
A CYLINDRICAL ITEM HAVING AN INTERNALLY FLANGED DIAMETER DESIGNED TO RETAIN A LENS OR WINDOW IN THE OBJECTIVE END, OR A DIOPTER SCALE AT THE VIEWING END OF AN OPTICAL INSTRUMENT. IT MAY HAVE ONE OR MORE OF THE FOLLOWING CHARACTERISTICS: INTERNAL THREAD OR MACHINED FOR A PRESS FIT, METHOD OF SECURING, AND/OR KNURLED PERIPHERY. FOR EXTERNALLY THREADED ITEMS, SEE RETAINER, OPTICAL ELEMENT. EXCLUDES CELL, OPTICAL ELEMENT; NUT, PLAIN KNURLED; NUT, PLAIN ROUND; AND RING, RETAINING.
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Manufacturer Information:
| HS020915-003-00 | 51215 | BOEING COMPANY, THE |
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Techincal Specification:
| APERTURE DIAMETER | 2.000 INCHES NOMINAL | | INTERNAL FLANGE THICKNESS | 0.288 INCHES NOMINAL | | OUTSIDE DIAMETER | 2.250 INCHES NOMINAL | | MATERIAL | ALUMINUM ALLOY 6061 |
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