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National Stock Number:
1240-01-054-5789
Federal Supply Class:
1240
National Item Identification Number:
010545789
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:
| 10556096 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| APERTURE DIAMETER | 2.406 INCHES NOMINAL | | GROOVE DIAMETER | 2.490 INCHES NOMINAL | | GROOVE LOCATION | INSIDE END OF THREAD | | INNER GROOVE WIDTH | 0.078 INCHES NOMINAL | | INTERNAL FLANGE THICKNESS | 1.750 INCHES NOMINAL | | OUTSIDE DIAMETER | 2.688 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/8, ALLOY 6061, T6 FED SPEC SINGLE MATERIAL RESPONSE OR WW-T-700/3, ALLOY 2024, T3 FED SPEC SINGLE MATERIAL RESPONSE OR WW-T-700/6, ALLOY 6061, T6 FED SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | ALUMINUM ALLOY 2024 OR ALUMINUM ALLOY 6061 | | SCREW THREAD SERIES DESIGNATOR | UNS | | SURFACE TREATMENT | ANODIZE | | THREAD DIRECTION | RIGHT-HAND | | THREAD CLASS | 2B | | THREAD LENGTH | 0.172 INCHES | | THREAD LOCATION | INTERNAL | | THREAD SIZE | 2 1/2-28 |
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