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National Stock Number:
6650-01-171-6965
Federal Supply Class:
6650
National Item Identification Number:
011716965
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:
| 13075488 | 04939 | LOCKHEED MARTIN CORPORATION | | 13075488 | 58260 | PROGRAM MANAGER ADVANCED ATTACK HELICOPTER BARCOM AMCPM-AAH |
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Techincal Specification:
| BODY DIAMETER | 0.136 INCHES NOMINAL | | BODY OUTSIDE DIAMETER | 1.268 INCHES MAXIMUM | | FLANGE WIDTH | 0.121 INCHES NOMINAL | | INTERNAL SHOULDER DIAMETER | 0.920 INCHES NOMINAL | | INTERNAL SHOULDER THICKNESS | 0.136 INCHES NOMINAL | | OVERALL LENGTH | 0.929 INCHES MINIMUM AND 0.933 INCHES MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A582,TYPE 416 ASSN STD SINGLE MATERIAL RESPONSE | | MATERIAL | STEEL COMP 416 | | SMALLER FLANGE WIDTH | 0.121 INCHES NOMINAL | | STRAIGHT BORE DEPTH | 0.795 INCHES NOMINAL | | STRAIGHT BORE INSIDE DIAMETER | 1.067 INCHES MAXIMUM | | STYLE DESIGNATOR | SPACER |
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