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National Stock Number:
6650-00-531-6646
Federal Supply Class:
6650
National Item Identification Number:
005316646
Description:
SPACER,OPTICAL ELEMENT
Detail:
A TUBULAR SHAPED ITEM DESIGNED TO MAINTAIN A PREDETERMINED DISTANCE BETWEEN OPTICAL ELEMENTS, SUCH AS LENSES, RETICLES, AND THE LIKE. THE BORE MAY BE STRAIGHT, TAPERED OR COUNTERBORED, AND MAY HAVE ANNULAR SERRATIONS TO CONVERGE OR DIVERGE LIGHT RAYS. THE SURFACES, WHICH MATE WITH THE OPTICS, ARE USUALLY CHAMFERED, CONCAVE, AND/OR HAVE A SPECIFIED FINISH DESIGNATION IN THE RANGE OF 1 TO 125 MICROINCHES ARITHMETICAL AVERAGE (AA). SEE ALSO SPACER, SLEEVE AND CELL, OPTICAL ELEMENT.
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Manufacturer Information:
| 5316646 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| END INTERNAL BEVEL ANGLE | 31.0 DEGREES NOMINAL | | BODY OUTSIDE DIAMETER | 1.426 INCHES MAXIMUM | | OVERALL LENGTH | 0.340 INCHES NOMINAL | | MATERIAL | ALUMINUM ALLOY 6061 | | STYLE DESIGNATOR | SPACER | | TAPER ANGLE | 8.9 DEGREES NOMINAL | | TAPER BORE MINOR DIAMETER | 1.260 INCHES MAXIMUM |
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