NSN 1240-00-321-8552

Part Details | OPTICAL ELEMENT RETAINER

1240-00-321-8552 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: 11744823, 1240-00-321-8552, 00-321-8552, 1240003218552, 003218552

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
12NOV 16, 197300-321-855222451 ( RETAINER, OPTICAL ELEMENT )
REFERENCE DRAWINGS & PICTURES
Cross Reference | NSN 1240-00-321-8552
Part Number Cage Code Manufacturer
1174482319200US ARMY ARDEC RDECOM
Technical Data | NSN 1240-00-321-8552
Characteristic Specifications
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225 TO 6, ALLOY 2024, T4 FED SPEC SINGLE MATERIAL RESPONSE
MATERIAL ALUMINUM ALLOY 2024
INTERNAL ANNULAR SERRATION NOT PROVIDED