NSN 1240-01-123-4821

Part Details | OPTICAL ELEMENT RETAINER

1240-01-123-4821 A cylindrical, externally threaded item having a centrally located hole specifically designed to retain by means of either a raised box (shoulder), or counterbore, countersink, or a similar shaped recess, an optical element such as a lens, reticle, cell, and the like, in optical assemblies. It must have drilled holes or slots to facilitate assembly and disassembly. For items which house the optical element(s), and form the internal or central portions of an optical system, see CELL, OPTICAL ELEMENT. Excludes RING, EXTERNALLY THREADED.

Alternate Parts: O101, 1240-01-123-4821, 01-123-4821, 1240011234821, 011234821

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
12DEC 12, 198101-123-482122451 ( RETAINER, OPTICAL ELEMENT )
REFERENCE DRAWINGS & PICTURES

SHOULDERED

Cross Reference | NSN 1240-01-123-4821
Part Number Cage Code Manufacturer
O10178908UNERTL JOHN OPTICAL CO INC
Technical Data | NSN 1240-01-123-4821
Characteristic Specifications
STYLE DESIGNATOR SHOULDERED
HOLE DIAMETER1.455 INCHES NOMINAL
OVERALL LENGTH0.500 INCHES NOMINAL
DRIVE TYPE SLOTTED
HOLE OR SLOT QUANTITY2