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National Stock Number:
5855-01-039-2856
Federal Supply Class:
5855
National Item Identification Number:
010392856
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:
| SM-D-850425 | 02004 | COLONIAL MFG CO INC | | SM-D-850425 | 53549 | STARLIGHT COMPONENTS INC | | SM-D-850425 | 80063 | US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR |
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Techincal Specification:
| APERTURE DIAMETER | 2.670 INCHES NOMINAL | | FSC APPLICATION DATA | NIGHT VISION EQUIPMENT | | INTERNAL FLANGE THICKNESS | 0.049 INCHES NOMINAL | | OVERALL LENGTH | 0.959 INCHES NOMINAL | | MATERIAL | ALUMINUM ALLOY 6061 | | MOUNTING CONFIGURATION | 0.086 IN. DIA HOLE 1 | | OUTSIDE DIAMETER | 3.270 INCHES NOMINAL | | SCREW THREAD SERIES DESIGNATOR | UNS | | THREAD CLASS | 2B | | THREAD DIRECTION | RIGHT-HAND | | THREAD LOCATION | INTERNAL | | THREAD LENGTH | 0.480 INCHES | | THREAD PITCH DIAMETERS | +3.1389 TO 3.1459 INCHES | | THREAD SIZE | 7/40-18 |
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