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National Stock Number:
5855-00-125-0686
Federal Supply Class:
5855
National Item Identification Number:
001250686
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:
| RT205944-1 | 13567 | ELBIT SYSTEMS OF AMERICA - NIGHT VISION LLC | | SM-D-657334 | 04YE2 | VALCORE MANUFACTURING LLC | | SM-D-657334 | 20723 | VALCORE MANUFACTURING LLC | | SM-D-657334 | 21530 | SPENCER INDUSTRIES INC | | SM-D-657334 | 7Z646 | MARK INDUSTRIES INC | | SM-D-657334 | 80063 | US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR | | SM-D-657334 | 84027 | AIW-ALTON INC | | SM-D-657334 | 93663 | I T I ELECTRONICS, INC. |
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Techincal Specification:
| APERTURE DIAMETER | 1.770 INCHES MINIMUM AND 1.774 INCHES MAXIMUM | | FSC APPLICATION DATA | NIGHT VISION EQUIPMENT,EMITTED AND REFLECTED RADIATION | | INTERNAL FLANGE THICKNESS | 0.250 INCHES NOMINAL | | MATERIAL | ALUMINUM ALLOY | | MOUNTING CONFIGURATION | 0.136.IN. DIA HOLES 2 | | OUTSIDE DIAMETER | 1.910 INCHES MINIMUM AND 1.950 INCHES MAXIMUM | | OVERALL LENGTH | 2.380 INCHES NOMINAL | | SPECIAL FEATURES | CHAMFERED |
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