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		                        | National Stock Number:
 1240-01-108-4984
 
 Federal Supply Class:
 1240
 
 National Item Identification Number:
 011084984
 
 Description:
 CELL,OPTICAL ELEMENT
 
 Detail:
 A CYLINDRICAL ITEM SPECIFICALLY DESIGNED TO HOLD A LENS, RETICLE, OR WINDOW IN AN OPTICAL SYSTEM. INCLUDES ECCENTRIC CELLS AND/OR RINGS DESIGNED TO BE ROTATED WITHIN THE INSTRUMENT TO SHIFT AN OPTICAL ELEMENT TO A PRESCRIBED POSITION.
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 Manufacturer Information:
 
 | 8620329 | 19200 | US ARMY ARDEC RDECOM | 
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 Techincal Specification:
 
 | CHAMFER LOCATION | BOTH ENDS |  | CHAMFER SIZE | 0.015 IN. BY 45 DEG;0.015 IN. BY 45 DEG |  | DRIVE TYPE | SLOTTED FACE |  | ECCENTRIC CONSTRUCTION | NOT PROVIDED |  | ELEMENT SECURING METHOD | THREADED RING |  | MATERIAL DOCUMENT AND CLASSIFICATION | WW-T-700/3, ALLOY 2024, T3 FED SPEC 1ST MATERIAL RESPONSE AND QQ-B-626, COMP 22 FED SPEC 2ND MATERIAL RESPONSE |  | MATERIAL | ALUMINUM ALLOY 2024 AND COPPER ALLOY 360 |  | SCREW THREAD SERIES DESIGNATOR | UNS |  | THREAD CLASS | 2B AND 2A |  | THREAD DIRECTION | RIGHT-HAND |  | THREAD LENGTH | 0.266 INCHES AND 0.475 INCHES |  | THREAD LOCATION | INTERNAL AND EXTERNAL |  | THREAD PITCH DIAMETERS | +1.9797 TO 1.9851 INCHES AND +2.2866 TO 2.7909 INCHES |  | THREAD SIZE | 2-32 AND 2 5/16-32 | 
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