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National Stock Number:
5855-01-067-8841
Federal Supply Class:
5855
National Item Identification Number:
010678841
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-C-804271 | 3F796 | PART MAKERS INC | | SM-C-804271 | 80063 | US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR |
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Techincal Specification:
| APERTURE DIAMETER | 4.570 INCHES NOMINAL | | FSC APPLICATION DATA | NIGHT VISION EQUIPMENT,EMITTED ANDREFLECTED RADIATION | | INTERNAL FLANGE THICKNESS | 0.200 INCHES NOMINAL | | MATERIAL | PLASTIC | | OUTSIDE DIAMETER | 4.770 INCHES NOMINAL | | SUPPLEMENTARY FEATURES | ALLOWABLE DRAFT ANGLE 2 DEGREES MAXIMUM | | SPECIAL FEATURES | SURFACE ROUGHNES TO BE 125 MICRO INCHES OR BETTER |
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