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National Stock Number:
1240-01-077-2885
Federal Supply Class:
1240
National Item Identification Number:
010772885
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:
| 11780079 | 19200 | US ARMY ARDEC RDECOM | | 42473-1 | 09344 | ROCKWELL COLLINS, INC. DBA RC DISPLAYS SYSTEMS |
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Techincal Specification:
| APERTURE DIAMETER | 3.383 INCHES MINIMUM AND 3.393 INCHES MAXIMUM | | INTERNAL FLANGE THICKNESS | 0.362 INCHES NOMINAL | | OUTSIDE DIAMETER | 3.740 INCHES MINIMUM AND 3.760 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-250/12, T651 FED SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | ALUMINUM ALLOY 7075 | | MOUNTING CONFIGURATION | 0.081 IN.DIA.12 HOLES EQUALLY SPACED | | SCREW THREAD SERIES DESIGNATOR | UNS | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD PITCH DIAMETERS | +3.7235 TO 3.7283 INCHES | | THREAD LENGTH | 0.125 INCHES | | THREAD LOCATION | EXTERNAL | | THREAD SIZE | 3/8-32 |
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