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National Stock Number:
1240-00-682-8064
Federal Supply Class:
1240
National Item Identification Number:
006828064
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:
| 1240006828064 | SCY13 | E.C.A ETABLISSEMENT CENTRALD'APPROVISIONNEMENT DES FORCES ARMEE | | 8574785 | 19200 | US ARMY ARDEC RDECOM | | 8574785 | 21530 | SPENCER INDUSTRIES INC |
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Techincal Specification:
| APERTURE DIAMETER | 2.375 INCHES NOMINAL | | INTERNAL FLANGE THICKNESS | 0.685 INCHES NOMINAL | | OUTSIDE DIAMETER | 3.060 INCHES NOMINAL | | MATERIAL | STEEL COMP 303 | | SCREW THREAD SERIES DESIGNATOR | UN | | THREAD CLASS | 3B | | THREAD DIRECTION | RIGHT-HAND | | THREAD LOCATION | INTERNAL | | THREAD PITCH DIAMETERS | +0.0625 TO 0.7500 INCHES | | THREAD LENGTH | 0.782 INCHES | | THREAD SIZE | 2 7/8-16 |
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