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National Stock Number:
1240-00-382-5897
Federal Supply Class:
1240
National Item Identification Number:
003825897
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:
| 265451 | 56232 | LOCKHEED MARTIN CORPORATION | | 481117-4 | 56232 | LOCKHEED MARTIN CORPORATION | | 481117PC4 | 10001 | NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER | | 654780 | 10001 | NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER |
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Techincal Specification:
| APERTURE DIAMETER | 3.125 INCHES NOMINAL | | GROOVE LOCATION | INSIDE FACE OF FLANGE | | INTERNAL FLANGE THICKNESS | 0.062 INCHES NOMINAL | | MATERIAL | COPPER ALLOY | | OUTSIDE DIAMETER | 3.375 INCHES NOMINAL | | SURFACE TREATMENT | FNAAF0 AND ENAMEL |
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