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National Stock Number:
6650-00-087-1555
Federal Supply Class:
6650
National Item Identification Number:
000871555
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:
| SC-C-614587 | 80063 | US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR |
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Techincal Specification:
| BODY OUTSIDE DIAMETER | 3.097 INCHES MINIMUM AND 3.100 INCHES MAXIMUM | | FSC APPLICATION DATA | NIGHT VISION EQUIPMENT,EMITTED AND REFLECTED RADIATION | | OVERALL LENGTH | 0.879 INCHES MINIMUM AND 0.883 INCHES MAXIMUM | | OVERALL THICKNESS | 0.879 INCHES MINIMUM AND 0.883 INCHES MAXIMUM | | MATERIAL | ALUMINUM ALLOY 6061 | | SPECIAL TEST FEATURES | CONFORMS TO MIL-D-1000 | | STRAIGHT BORE INSIDE DIAMETER | 3.050 INCHES NOMINAL | | STYLE DESIGNATOR | SPACER | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-STD-171 FINISH NO. 7.2.2 MIL STD SINGLE TREATMENT RESPONSE | | SURFACE TREATMENT | ANODIZE |
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