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National Stock Number:
6650-01-076-1997
Federal Supply Class:
6650
National Item Identification Number:
010761997
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:
| 12266753 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM | | 12266753 | 20418 | DRS SUSTAINMENT SYSTEMS, INC. USE CAGE CODE 98255 FOR CATALOGING |
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Techincal Specification:
| BODY DIAMETER | 3.090 INCHES NOMINAL | | BODY OUTSIDE DIAMETER | 3.158 INCHES MAXIMUM | | FLANGE WIDTH | 0.230 INCHES NOMINAL | | OVERALL LENGTH | 0.559 INCHES NOMINAL | | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/8,T651 FED SPEC SINGLE MATERIAL RESPONSE | | MATERIAL | ALUMINUM ALLOY 6061 | | SPECIAL FEATURES | SPACER-NO. 1,EYEPIECE; BLACK; 4 SLOTS 0.060 IN. WIDE BY 0.050 IN. DEEP; 0.081 IN. THROUGH HOLE WITH CENTER 0.290 IN. FROM TAPERED BORE EDGE; ESTABLISH LENGTH BY MEASURING SEPARATION BETWEEN REFERENCE SPHERE 1.990 RADIUS AND SURFACE B (REFERENCE RADIUS LOCATED 0.010 IN. FROM B EDGE) | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-A-8625,TYPE 2,CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE | | SURFACE TREATMENT | ANODIZE | | TAPER ANGLE | 16.0 DEGREES NOMINAL | | TAPER BORE MAJOR DIAMETER | 3.066 INCHES MAXIMUM | | TAPER BORE MINOR DIAMETER | 2.745 INCHES MAXIMUM |
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