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National Stock Number:
6650-01-437-6798
Federal Supply Class:
6650
National Item Identification Number:
014376798
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:
| 11733412 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| END INTERNAL BEVEL ANGLE | 16.0 DEGREES NOMINAL | | BODY OUTSIDE DIAMETER | 4.077 INCHES NOMINAL | | OVERALL LENGTH | 0.906 INCHES NOMINAL | | OVERALL THICKNESS | 0.147 INCHES MAXIMUM | | MATERIAL | ALUMINUM ALLOY | | SPECIAL FEATURES | 5/8 DIA. HOLE, 0.064 SLOT. | | STRAIGHT BORE INSIDE DIAMETER | 3.940 INCHES NOMINAL | | STYLE DESIGNATOR | SPACER | | SURFACE FINISH | 125.0 MICROINCHES OVERALL |
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