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National Stock Number:
1240-01-319-9611
Federal Supply Class:
1240
National Item Identification Number:
013199611
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:
| 13077176-501 | 04939 | LOCKHEED MARTIN CORPORATION | | 13077176-501 | 58260 | PROGRAM MANAGER ADVANCED ATTACK HELICOPTER BARCOM AMCPM-AAH |
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Techincal Specification:
| APERTURE DIAMETER | 0.162 INCHES NOMINAL | | INTERNAL FLANGE THICKNESS | 0.005 INCHES NOMINAL | | MATERIAL | STEEL COMP 321 | | OUTSIDE DIAMETER | 3.038 INCHES MINIMUM AND 3.039 INCHES MAXIMUM |
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