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National Stock Number:
6650-01-142-3805
Federal Supply Class:
6650
National Item Identification Number:
011423805
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:
| 12310404 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM |
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Techincal Specification:
| BODY OUTSIDE DIAMETER | 1.817 INCHES MAXIMUM | | OVERALL LENGTH | 0.500 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/8,T651 FED SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | ALUMINUM ALLOY 6061 | | STRAIGHT BORE DEPTH | 0.477 INCHES NOMINAL | | STYLE DESIGNATOR | SPACER | | TAPER ANGLE | 45.0 DEGREES NOMINAL | | TAPER BORE MINOR DIAMETER | 1.625 INCHES MAXIMUM |
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