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National Stock Number:
6650-01-082-3802
Federal Supply Class:
6650
National Item Identification Number:
010823802
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:
| 12266737 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM |
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Techincal Specification:
| BODY OUTSIDE DIAMETER | 2.120 INCHES MAXIMUM | | OVERALL LENGTH | 0.319 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/8,T651 FED SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | ALUMINUM ALLOY 6061 | | SPECIAL FEATURES | SPACER-NO. 3,WIDE ANGLE OBJECTIVE; BLACK,2 EQUALLY SPACED SLOTS ON TAPERED BORE END 0.060 IN. WIDE BY 0.050 IN. DEEP; ESTABLISH LENGTH BY MEASURING SEPARATION BETWEEN REFERENCE SPHERE 1.2446 IN. RADIUS AND SURFACE A (REFERENCE RADIUS LOCATED 0.058 IN. FROM EDGE A) | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625,TYPE 2,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE | | SURFACE TREATMENT | ANODIZE | | TAPER ANGLE | 12.0 DEGREES NOMINAL | | TAPER BORE MINOR DIAMETER | 1.785 INCHES MAXIMUM |
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