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National Stock Number:
6650-00-245-8442
Federal Supply Class:
6650
National Item Identification Number:
002458442
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-635174 | 80063 | US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR |
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Techincal Specification:
| FSC APPLICATION DATA | NIGHT VISION EQUIPMENT,EMITTED AND REFLECTED RADIATION | | MATERIAL | PLASTIC | | SPECIAL FEATURES | O/A DIA OF 2.156 IN. PORM 0.010 IN.,INSIDE DIA OF 1.790 IN. PORM 0.010 IN. | | SPECIAL TEST FEATURES | INTERPRET DRAWING IAW STANDARDS PRESCRIBED BY MIL-D-1000 | | SUPPLEMENTARY FEATURES | PLASTIC SHEET IS 0.008 IN. THICK MIN AND 0.014 IN. THICK MAX |
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