1240-00-382-5782 FILTER,LIGHT,OPTICAL INSTRUMENT Index 6650-00-382-5784 RING,RETAINING,OPTICAL ELEMENT

National Stock Number:
6650-00-382-5783

Federal Supply Class:
6650

National Item Identification Number:
003825783

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:
481111PC210001NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER
481111PC253711NAVAL SEA SYSTEMS COMMAND
481111PC256232LOCKHEED MARTIN CORPORATION


Techincal Specification:
APERTURE DIAMETER1.875 INCHES NOMINAL
INTERNAL FLANGE THICKNESS0.030 INCHES NOMINAL
OUTSIDE DIAMETER2.062 INCHES NOMINAL
OVERALL LENGTH0.156 INCHES NOMINAL
MATERIALALUMINUM ALLOY
SCREW THREAD SERIES DESIGNATORUNS
THREAD CLASS2B
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.156 INCHES
THREAD LOCATIONINTERNAL
THREAD SIZE1 7/8-32


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