NSN 1240-00-155-3343

Part Details | OPTICAL ELEMENT RETAINER

1240-00-155-3343 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: 323285PC7, 323285PC7, 3232857, 323285-7, 3232857, 1240-00-155-3343, 00-155-3343, 1240001553343, 001553343

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
12JAN 01, 196300-155-334322451 ( RETAINER, OPTICAL ELEMENT )
REFERENCE DRAWINGS & PICTURES

RECESSED

Cross Reference | NSN 1240-00-155-3343
Part Number Cage Code Manufacturer
323285PC708638ALLIANT TECHSYSTEMS INCORDNANCE SYSTEMS DIV
323285PC710001NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT
323285-710001NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT
323285730003NAVAL AIR SYSTEMS COMMAND MANAGEDORIGINAL DESIGN ACTIVITY NOT
Technical Data | NSN 1240-00-155-3343
Characteristic Specifications
STYLE DESIGNATOR RECESSED
HOLE DIAMETER0.188 INCHES NOMINAL
OVERALL LENGTH0.200 INCHES NOMINAL
RECESS ANGLE IN DEG30.0
RECESS DEPTH0.150 INCHES NOMINAL
THREAD SIZE0.438 IN.-20
HOLE CHAMFER ANGLE IN DEG0.0
HOLE CHAMFER DIAMETER0.188 INCHES NOMINAL
MATERIAL COPPER ALLOY
DRIVE TYPE SLOTTED
HOLE OR SLOT QUANTITY2
WIDTH0.060 INCHES NOMINAL
DEPTH0.050 INCHES NOMINAL
DRIVE FACILITY ANGULAR SPACING IN DEG180.0
INTERNAL ANNULAR SERRATION NOT PROVIDED
GUIDE DESIGN THREAD RELIEF
GUIDE LOCATION EDGE OPPOSITE DRIVE EDGE
SETSCREW NOTCH NOT PROVIDED
END ITEM IDENTIFICATIONTELESCOPE MK79