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National Stock Number:
1240-01-154-3548
Federal Supply Class:
1240
National Item Identification Number:
011543548
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:
| HB021532-003-00 | 51215 | BOEING COMPANY, THE |
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Techincal Specification:
| APERTURE DIAMETER | 6.606 INCHES NOMINAL | | INTERNAL FLANGE THICKNESS | 0.487 INCHES NOMINAL | | OUTSIDE DIAMETER | 8.800 INCHES NOMINAL | | MATERIAL | GLASS | | MOUNTING CONFIGURATION | 6 HOLES EQUALLY SPACED 0.218 PORM0.005 IN. DIA |
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