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National Stock Number:
1240-01-068-2422
Federal Supply Class:
1240
National Item Identification Number:
010682422
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:
| 048132 | 34228 | L3 TECHNOLOGIES, INC. | | 12266932 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM | | 957C048132 | 34228 | L3 TECHNOLOGIES, INC. |
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Techincal Specification:
| APERTURE DIAMETER | 3.470 INCHES MINIMUM AND 3.477 INCHES MAXIMUM | | INTERNAL FLANGE THICKNESS | 0.030 INCHES NOMINAL | | OUTSIDE DIAMETER | 3.750 INCHES NOMINAL | | MATERIAL | STEEL CORROSION RESISTING | | SCREW THREAD SERIES DESIGNATOR | UNS | | THREAD DIRECTION | RIGHT-HAND | | THREAD LOCATION | INTERNAL | | THREAD PITCH DIAMETERS | +3.4820 TO 3.4867 INCHES | | THREAD SIZE | 3 1/2-36 |
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