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National Stock Number:
6650-01-052-1751
Federal Supply Class:
6650
National Item Identification Number:
010521751
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:
| 10549288 | 19204 | ARMY, UNITED STATES DEPARTMENT OF THE |
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Techincal Specification:
| BODY DIAMETER | 2.040 INCHES NOMINAL | | BODY OUTSIDE DIAMETER | 2.069 INCHES MAXIMUM | | FLANGE WIDTH | 0.235 INCHES NOMINAL | | INTERNAL SHOULDER DIAMETER | 1.938 INCHES NOMINAL | | INTERNAL SHOULDER THICKNESS | 0.320 INCHES NOMINAL | | OVERALL LENGTH | 0.641 INCHES NOMINAL | | MATERIAL | ALUMINUM ALLOY | | STRAIGHT BORE DEPTH | 0.641 INCHES NOMINAL | | STRAIGHT BORE INSIDE DIAMETER | 1.938 INCHES NOMINAL | | STYLE DESIGNATOR | SPACER | | SPECIAL FEATURES | SUFACE FINISH:ANODIC FILM,SULFURIC ACID,MIL-A-8625,TYPE II,CLASS 2,DYED BLACK |
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