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National Stock Number:
1240-00-760-4739
Federal Supply Class:
1240
National Item Identification Number:
007604739
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:
| 7604739 | 19200 | US ARMY ARDEC RDECOM | | BL90254 | 70408 | AT AND T CORP |
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Techincal Specification:
| APERTURE DIAMETER | 1.434 INCHES MINIMUM AND 1.440 INCHES MAXIMUM | | INTERNAL FLANGE THICKNESS | 0.062 INCHES MINIMUM AND 0.064 INCHES MAXIMUM | | OUTSIDE DIAMETER | 2.295 INCHES MINIMUM AND 2.297 INCHES MAXIMUM | | OVERALL LENGTH | 0.185 INCHES MINIMUM AND 0.191 INCHES MAXIMUM | | MATERIAL | IRON CAST |
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