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National Stock Number:
1240-01-498-2272
Federal Supply Class:
1240
National Item Identification Number:
014982272
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:
| 7408677 | 53711 | NAVAL SEA SYSTEMS COMMAND |
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Techincal Specification:
| DRIVE TYPE | SLOTTED FACE | | INTERNAL FLANGE THICKNESS | 0.780 INCHES NOMINAL | | OUTSIDE DIAMETER | 3.375 INCHES NOMINAL | | MATERIAL | STEEL CORROSION RESISTING | | MOUNTING CONFIGURATION | 4X 0.154 THRU MOUNTING HOLES | | SPECIAL FEATURES | RING HAS AN ENLARGED DIOPTER SCALE RANGE -7.5 TO +3.5 AND -4 TO +2. INSIDE DIAMETER OF RING MEASURES 2.625 IN. |
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