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National Stock Number:
1240-00-328-5606
Federal Supply Class:
1240
National Item Identification Number:
003285606
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:
| 10558952 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| APERTURE DIAMETER | 2.900 INCHES NOMINAL | | FSC APPLICATION DATA | COLLIMATOR | | GROOVE DIAMETER | 3.130 INCHES NOMINAL | | GROOVE LOCATION | ADJACENT TO INTERNAL FLANGE | | INNER GROOVE WIDTH | 0.140 INCHES NOMINAL | | INTERNAL FLANGE THICKNESS | 0.310 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | WW-T-700/3, T3 FED SPEC SINGLE MATERIAL RESPONSE OR WW-T-700/6, T6 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-200/3, T4 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-200/8, 6061, T6 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/6, T4 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-225/8, ALLOY 6061, T6 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-250/4, T4 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-250/11, T6 FED SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | ALUMINUM ALLOY 2024 OR ALUMINUM ALLOY 6061 | | MOUNTING CONFIGURATION | 3 THREADED HOLES EQUALLY SPACED 120 DEG APART AROUND OUTSIDE DIA; 0.138-32UNC-2B | | OUTSIDE DIAMETER | 3.250 INCHES NOMINAL |
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