1270-01-171-6919 CELL,OPTICAL ELEMENT Index 1270-01-171-6921 CELL,OPTICAL ELEMENT

National Stock Number:
1270-01-171-6920

Federal Supply Class:
1270

National Item Identification Number:
011716920

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.


Manufacturer Information:
1307503304939LOCKHEED MARTIN CORPORATION
1307503358260PROGRAM MANAGER ADVANCED ATTACK HELICOPTER BARCOM AMCPM-AAH


Techincal Specification:
CHAMFER LOCATIONOPPOSITE DRIVE END
CHAMFER SIZE0.030 IN.BY 45 DEG
DRIVE TYPESLOTTED DRIVE ON PERIPHERY
ECCENTRIC CONSTRUCTIONNOT PROVIDED
ELEMENT SECURING METHODRETAINER RING
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-P-46131,TYPE 3,CLASS 1 MIL SPEC SINGLE MATERIAL RESPONSE
MATERIALPLASTIC POLYPHENYLENE OXIDE
OVERALL DIAMETER1.312 INCHES NOMINAL
OVERALL LENGTH0.125 INCHES NOMINAL
SCREW THREAD SERIES DESIGNATORUNS
THREAD CLASS2A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.125 INCHES
THREAD LOCATIONEXTERNAL
THREAD PITCH DIAMETERS+1.2916 TO 1.2952 INCHES
THREAD SIZE1 5/16-40


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