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National Stock Number:
1240-00-157-9379
Federal Supply Class:
1240
National Item Identification Number:
001579379
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:
| 481112PC8 | 10001 | NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER | | 481112PC8 | 56232 | LOCKHEED MARTIN CORPORATION |
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Techincal Specification:
| APERTURE DIAMETER | 2.125 INCHES NOMINAL | | GROOVE DIAMETER | 2.218 INCHES NOMINAL | | GROOVE LOCATION | INSIDE FACE OF FLANGE | | INNER GROOVE WIDTH | 0.093 INCHES NOMINAL | | INTERNAL FLANGE THICKNESS | 0.054 INCHES NOMINAL | | OUTSIDE DIAMETER | 2.562 INCHES NOMINAL | | OVERALL LENGTH | 0.297 INCHES NOMINAL | | MATERIAL | COPPER ALLOY | | MOUNTING CONFIGURATION | 0.059-72NF-3 HOLE FOR MOUNTING SCREW | | SCREW THREAD SERIES DESIGNATOR | UNS | | THREAD CLASS | 2A | | THREAD DIRECTION | RIGHT-HAND | | THREAD LENGTH | 0.171 INCHES | | THREAD LOCATION | INTERNAL | | THREAD SIZE | 2 7/16-32 |
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