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National Stock Number:
1240-01-317-3497
Federal Supply Class:
1240
National Item Identification Number:
013173497
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:
| 9376251 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| APERTURE DIAMETER | 2.817 INCHES NOMINAL | | INTERNAL FLANGE THICKNESS | 0.050 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | WW-T-700/6, ALLOY 6061, T6, TYPE 1 FED SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | ALUMINUM ALLOY 6061 | | OUTSIDE DIAMETER | 3.000 INCHES NOMINAL |
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