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National Stock Number:
1240-00-520-4660
Federal Supply Class:
1240
National Item Identification Number:
005204660
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:
| 5204660 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| APERTURE DIAMETER | 2.2619 INCHES MINIMUM AND 2.2649 INCHES MAXIMUM | | GROOVE DIAMETER | 2.406 INCHES NOMINAL | | GROOVE LOCATION | ADJACENT TO INTERNAL FLANGE | | INNER GROOVE WIDTH | 0.062 INCHES NOMINAL | | INTERNAL FLANGE THICKNESS | 0.219 INCHES NOMINAL | | OUTSIDE DIAMETER | 2.527 INCHES MINIMUM AND 2.529 INCHES MAXIMUM | | MATERIAL | STEEL CORROSION RESISTING | | MOUNTING CONFIGURATION | 2.292-36NS-3B INTERNAL THEADS AROUND APERTURE | | THREAD LOCATION | INTERNAL |
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