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National Stock Number:
6650-01-102-4453
Federal Supply Class:
6650
National Item Identification Number:
011024453
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:
| 10219540 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND | | 10219540 | 64217 | P D C ASSOCIATES INC |
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Techincal Specification:
| APERTURE DIAMETER | 2.625 INCHES NOMINAL | | INTERNAL FLANGE THICKNESS | 0.071 INCHES NOMINAL | | OUTSIDE DIAMETER | 2.813 INCHES NOMINAL | | OVERALL LENGTH | 0.125 INCHES NOMINAL | | MATERIAL | ALUMINUM ALLOY 2024 | | SCREW THREAD SERIES DESIGNATOR | UNS | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.125 INCHES | | THREAD LOCATION | EXTERNAL | | THREAD PITCH DIAMETERS | +2.7865 TO 2.7909 INCHES | | THREAD SIZE | 2 13/16-32 |
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