NSN 1240-01-079-3049

Part Details | OPTICAL ELEMENT RETAINER

1240-01-079-3049 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: 12282212, 1240-01-079-3049, 01-079-3049, 1240010793049, 010793049

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
12JUL 01, 197901-079-304922451 ( RETAINER, OPTICAL ELEMENT )
REFERENCE DRAWINGS & PICTURES

RECESSED

Cross Reference | NSN 1240-01-079-3049
Part Number Cage Code Manufacturer
1228221219200US ARMY ARDEC RDECOM
Technical Data | NSN 1240-01-079-3049
Characteristic Specifications
STYLE DESIGNATOR RECESSED
HOLE DIAMETER2.750 INCHES NOMINAL
OVERALL LENGTH0.220 INCHES NOMINAL
RECESS ANGLE IN DEG45.0
RECESS DEPTH0.190 INCHES NOMINAL
THREAD SIZEA3.250
MATERIAL ALUMINUM ALLOY 2024
DRIVE TYPE SLOTTED
HOLE OR SLOT QUANTITY2
DIAMETER0.030 INCHES NOMINAL
INTERNAL ANNULAR SERRATION NOT PROVIDED
GUIDE DESIGN THREAD CHAMFER
SETSCREW NOTCH NOT PROVIDED
END ITEM IDENTIFICATIONXM1 GPS;XM1 TANK