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) |
---|---|---|---|
12 | DEC 12, 1981 | 01-123-4821 | 22451 ( RETAINER, OPTICAL ELEMENT ) |
REFERENCE DRAWINGS & PICTURES
SHOULDERED

Cross Reference | NSN 1240-01-123-4821
Part Number | Cage Code | Manufacturer |
---|---|---|
O101 | 78908 | UNERTL JOHN OPTICAL CO INC |
Technical Data | NSN 1240-01-123-4821
Characteristic | Specifications |
---|---|
STYLE DESIGNATOR | SHOULDERED |
HOLE DIAMETER | 1.455 INCHES NOMINAL |
OVERALL LENGTH | 0.500 INCHES NOMINAL |
DRIVE TYPE | SLOTTED |
HOLE OR SLOT QUANTITY | 2 |