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National Stock Number:
6650-00-409-0852
Federal Supply Class:
6650
National Item Identification Number:
004090852
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:
| 10516753 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| END INTERNAL BEVEL ANGLE | 29.2 DEGREES NOMINAL | | FSC APPLICATION DATA | PERISCOPE,TANK | | OVERALL LENGTH | 0.523 INCHES MINIMUM AND 0.528 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-267,TEMPER T4 FED SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | ALUMINUM ALLOY 2024 | | SMALLEST END INTERNAL BEVEL ANGLE | 16.7 DEGREES NOMINAL | | SERRATION WIDTH | 0.523 INCHES NOMINAL | | SPECIAL FEATURES | BLACK | | STRAIGHT BORE INSIDE DIAMETER | 2.265 INCHES MINIMUM AND 2.270 INCHES MAXIMUM | | STYLE DESIGNATOR | SPACER | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625,TYPE 2,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE | | SURFACE TREATMENT | ANODIZE |
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