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National Stock Number:
6650-01-082-3536
Federal Supply Class:
6650
National Item Identification Number:
010823536
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:
| 12266714 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM |
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Techincal Specification:
| BODY DIAMETER | 2.3600 INCHES NOMINAL | | BODY OUTSIDE DIAMETER | 2.5000 INCHES MAXIMUM | | FLANGE WIDTH | 0.062 INCHES NOMINAL | | OVERALL LENGTH | 0.3600 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/8,T651 FED SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | ALUMINUM ALLOY 6061 | | SPECIAL FEATURES | SPACER-NO. 2,NARROW ANGLE OBJECTIVE LENS; FINISH: ANODIC COATING,TYPE II,CLASS 2,DYED BLACK PER MIL-A-8625; A HOLE 0.060 DIA THRU ONE WALL LOCATED 0.150 FROM TAPERED EDGE; ESTABLISH LENGTH BY MEASURING SEPARATION BETWEEN REF SPHERE 1.0656 R AND ADJACENT SURFACE (REF R LOCATED 0.287 FROM ADJ EDGE; USED ON M901 | | TAPER ANGLE | 26.5 DEGREES NOMINAL | | TAPER BORE MAJOR DIAMETER | 2.3030 INCHES MAXIMUM | | TAPER BORE MINOR DIAMETER | 1.9600 INCHES MAXIMUM |
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