NSN 1240-01-073-1661

Part Details | OPTICAL ELEMENT RETAINING RING

1240-01-073-1661 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: 11507756, 11507756, 1240-01-073-1661, 01-073-1661, 1240010731661, 010731661

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
12MAR 11, 197901-073-166122585 ( RING, RETAINING, OPTICAL ELEMENT )
REFERENCE DRAWINGS & PICTURES
Cross Reference | NSN 1240-01-073-1661
Part Number Cage Code Manufacturer
1150775682577RAYTHEON COMPANYDBA RAYTHEON
1150775618876U S ARMY AVIATION AND MISSILECOMMAND
Technical Data | NSN 1240-01-073-1661
Characteristic Specifications
MATERIAL ALUMINUM ALLOY 6061
MATERIAL DOCUMENT AND CLASSIFICATIONAQQ-A-225 TO 8, T6$AWW-T-700 TO 6, ALLOY 6061, T6 1ST MATERIAL RESPONSE
OUTSIDE DIAMETER1.487 INCHES MINIMUM AND 1.491 INCHES MAXIMUM
INTERNAL FLANGE THICKNESS0.018 INCHES NOMINAL
APERTURE DIAMETER1.290 INCHES NOMINAL