NSN 1240-01-321-0251

Part Details | OPTICAL ELEMENT RETAINER

1240-01-321-0251 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: 799204832001, 799204832-001, 1240-01-321-0251, 01-321-0251, 1240013210251, 013210251

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
12JUN 07, 199001-321-025122451 ( RETAINER, OPTICAL ELEMENT )
REFERENCE DRAWINGS & PICTURES
Cross Reference | NSN 1240-01-321-0251
Part Number Cage Code Manufacturer
799204832-00104939LOCKHEED MARTIN CORPORATIONDBA LOCKHEED MARTIN
Technical Data | NSN 1240-01-321-0251
Characteristic Specifications
HOLE DIAMETER0.750 INCHES NOMINAL
OVERALL LENGTH0.400 INCHES NOMINAL
MATERIAL PLASTIC
DRIVE TYPE KNURL