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National Stock Number:
1240-00-989-4882
Federal Supply Class:
1240
National Item Identification Number:
009894882
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:
| 1240009894882 | A00AM | E.C.A ETABLISSEMENT CENTRAL DESAPPROVISIONNEMENTS DES FORCES ARMEE | | 8635182 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| APERTURE DIAMETER | 1.948 INCHES NOMINAL | | FSC APPLICATION DATA | PERISCOPE XM36,INTEGRATED WITH FIRE CONTROL EQUIPMENT | | INTERNAL FLANGE THICKNESS | 0.312 INCHES NOMINAL | | OUTSIDE DIAMETER | 2.937 INCHES NOMINAL | | OVERALL LENGTH | 0.437 INCHES NOMINAL | | MATERIAL | ALUMINUM ALLOY 2024 | | SCREW THREAD SERIES DESIGNATOR | UNS | | THREAD CLASS | 2B | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.312 INCHES | | THREAD LOCATION | INTERNAL | | THREAD SIZE | 1.562 IN.-32 |
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