NSN 6650-01-258-0810

Part Details | OPTICAL ELEMENT RETAINING RING

6650-01-258-0810 A cylindrical item having an internally flanged diameter designed to retain a lens or window in the objective end, or a diopter scale at the viewing end of an optical instrument. It may have one or more of the following characteristics: internal thread or machined for a press fit, method of securing, and/or knurled periphery. For externally threaded items, see RETAINER, OPTICAL ELEMENT. Excludes CELL, OPTICAL ELEMENT; NUT, PLAIN KNURLED; NUT, PLAIN ROUND; and RING, RETAINING.

Alternate Parts: 13076704, 13076704, 6650-01-258-0810, 01-258-0810, 6650012580810, 012580810

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
66JUN 27, 198701-258-081022585 ( RING, RETAINING, OPTICAL ELEMENT )
REFERENCE DRAWINGS & PICTURES
Cross Reference | NSN 6650-01-258-0810
Part Number Cage Code Manufacturer
1307670404939LOCKHEED MARTIN CORPORATIONDBA LOCKHEED MARTIN
1307670458260PROGRAM MANAGER ADVANCED ATTACKHELICOPTER BARCOM AMCPM-AAH
Technical Data | NSN 6650-01-258-0810
Characteristic Specifications
MATERIAL STEEL
THREAD LOCATION INTERNAL
THREAD SIZE2 13/16-32
SCREW THREAD SERIES DESIGNATOR UNS
THREAD CLASS2B
THREAD PITCH DIAMETERS+2.7762 TO +2.8100 INCHES
THREAD LENGTH0.230 INCHES
THREAD DIRECTION RIGHT-HAND
OVERALL LENGTH0.690 INCHES NOMINAL
OUTSIDE DIAMETER4.000 INCHES NOMINAL
INTERNAL FLANGE THICKNESS0.060 INCHES NOMINAL
APERTURE DIAMETER3.190 INCHES NOMINAL