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National Stock Number:
6650-01-302-4254
Federal Supply Class:
6650
National Item Identification Number:
013024254
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:
| 13294154-6 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND |
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Techincal Specification:
| BODY OUTSIDE DIAMETER | 0.335 INCHES MAXIMUM | | EXTERNAL SHOULDER DEPTH | 0.014 INCHES MINIMUM AND 0.116 INCHES MAXIMUM | | OVERALL LENGTH | 0.099 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A582,TYPE 303 ASSN STD SINGLE MATERIAL RESPONSE | | MATERIAL | STEEL COMP 303 | | SPECIAL FEATURES | MARK DASH NUMBERS .06 HIGH PER MIL-M-13231 TABLE II,GROUP III | | STYLE DESIGNATOR | SPACER |
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