3040-01-250-3988 SHAFT,STRAIGHT Index 3040-01-250-3990 SHAFT,SHOULDERED

National Stock Number:
6650-01-250-3989

Federal Supply Class:
6650

National Item Identification Number:
012503989

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.


Manufacturer Information:
03705134228L3 TECHNOLOGIES, INC.


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