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National Stock Number:
1240-01-237-0009
Federal Supply Class:
1240
National Item Identification Number:
012370009
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:
| 13076422 | 04939 | LOCKHEED MARTIN CORPORATION | | 13076422 | 58260 | PROGRAM MANAGER ADVANCED ATTACK HELICOPTER BARCOM AMCPM-AAH |
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Techincal Specification:
| APERTURE DIAMETER | 0.675 INCHES MINIMUM AND 0.685 INCHES MAXIMUM | | GROOVE DIAMETER | 1.196 INCHES NOMINAL | | GROOVE LOCATION | INSIDE END OF THREAD | | INNER GROOVE WIDTH | 0.020 INCHES MINIMUM AND 0.030 INCHES MAXIMUM | | INTERNAL FLANGE THICKNESS | 0.0271 INCHES NOMINAL | | OUTSIDE DIAMETER | 1.390 INCHES MINIMUM AND 1.410 INCHES MAXIMUM | | OVERALL LENGTH | 0.185 INCHES MINIMUM AND 0.195 INCHES MAXIMUM | | MATERIAL | ALUMINUM ALLOY 6061 | | SCREW THREAD SERIES DESIGNATOR | UNS | | THREAD CLASS | 2B | | THREAD DIRECTION | RIGHT-HAND | | THREAD PITCH DIAMETERS | +1.1713 TO 1.1759 INCHES | | THREAD LENGTH | 0.125 INCHES | | THREAD LOCATION | INTERNAL | | THREAD SIZE | 1 3/16-40 |
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