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National Stock Number:
6650-01-122-0074
Federal Supply Class:
6650
National Item Identification Number:
011220074
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:
| 044430 | 34228 | L3 TECHNOLOGIES, INC. | | 882C044430 | 34228 | L3 TECHNOLOGIES, INC. | | C044430 | 34228 | L3 TECHNOLOGIES, INC. |
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Techincal Specification:
| APERTURE DIAMETER | 1.875 INCHES NOMINAL | | INTERNAL FLANGE THICKNESS | 0.250 INCHES NOMINAL | | MATERIAL | ALUMINUM ALLOY 6061 | | OUTSIDE DIAMETER | 3.000 INCHES NOMINAL | | SCREW THREAD SERIES DESIGNATOR | UNC | | THREAD CLASS | 2B | | THREAD DIRECTION | RIGHT-HAND | | THREAD LOCATION | INTERNAL | | THREAD PITCH DIAMETERS | +0.1910 TO 0.2110 INCHES AND +0.1390 TO 0.1590 INCHES AND +0.3020 TO 0.3220 INCHES | | THREAD SIZE | 1/4-20 AND 10-24 AND 3/8-16 |
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