NSN 1240-01-079-3051

Part Details | OPTICAL ELEMENT RETAINER

1240-01-079-3051 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: 12279244, 1240-01-079-3051, 01-079-3051, 1240010793051, 010793051

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
12JUL 01, 197901-079-305122451 ( RETAINER, OPTICAL ELEMENT )
REFERENCE DRAWINGS & PICTURES

SHOULDERED

Cross Reference | NSN 1240-01-079-3051
Part Number Cage Code Manufacturer
1227924419200US ARMY ARDEC RDECOM
Technical Data | NSN 1240-01-079-3051
Characteristic Specifications
STYLE DESIGNATOR SHOULDERED
SHOULDER DIAMETER1.344 INCHES NOMINAL
SHOULDER LENGTH0.094 INCHES NOMINAL
TAPERED HOLE MINOR DIAMETER1.197 INCHES NOMINAL
TAPER ANGLE IN DEG5.0
OVERALL LENGTH0.312 INCHES NOMINAL
FLANGE THREAD SIZE1.4375 IN.-32
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225 TO 3, ALLOY 2011, T3 FED SPEC SINGLE MATERIAL RESPONSE
MATERIAL ALUMINUM ALLOY 2011
SURFACE TREATMENT ANODIZE
DRIVE TYPE SLOTTED
HOLE OR SLOT QUANTITY2
WIDTH0.060 INCHES NOMINAL
DEPTH0.060 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