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National Stock Number:
1240-01-384-1994
Federal Supply Class:
1240
National Item Identification Number:
013841994
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:
| 12950984 | 19200 | US ARMY ARDEC RDECOM | | 12950984 | 2F218 | DECILOG, INC. | | 12950984 | 2S308 | FREEHOLD MANUFACTURING ASSEMBLY COMPANY, INC. | | 12950984 | 63042 | MEMCO, INC. |
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Techincal Specification:
| APERTURE DIAMETER | 1.850 INCHES NOMINAL | | INTERNAL FLANGE THICKNESS | 0.050 INCHES NOMINAL | | OUTSIDE DIAMETER | 2.100 INCHES NOMINAL | | MATERIAL | ALUMINUM |
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