NSN 1240-00-115-4456

Part Details | OPTICAL ELEMENT RETAINER

1240-00-115-4456 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: 8615895, 1240-00-115-4456, 00-115-4456, 1240001154456, 001154456

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
12SEP 20, 196800-115-445622451 ( RETAINER, OPTICAL ELEMENT )
REFERENCE DRAWINGS & PICTURES

SHOULDERED

Cross Reference | NSN 1240-00-115-4456
Part Number Cage Code Manufacturer
861589519200US ARMY ARDEC RDECOM
Technical Data | NSN 1240-00-115-4456
Characteristic Specifications
STYLE DESIGNATOR SHOULDERED
SHOULDER DIAMETER1.948 INCHES MINIMUM AND 1.953 INCHES MAXIMUM
SHOULDER LENGTH0.312 INCHES NOMINAL
HOLE DIAMETER1.690 INCHES MINIMUM AND 1.700 INCHES MAXIMUM
OVERALL LENGTH0.678 INCHES MINIMUM AND 0.698 INCHES MAXIMUM
FLANGE THREAD SIZE2.000 IN.-32UNS-2A
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-764, TYPE 303, COND A-CANCELED FED SPEC 1ST MATERIAL RESPONSE AND QQ-S-764, TYPE 303SE, COND A-CANCELED FED SPEC 2ND MATERIAL RESPONSE
MATERIAL3$DST0079
SURFACE TREATMENT OXIDE
DRIVE TYPE SLOTTED
HOLE OR SLOT QUANTITY2
WIDTH0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM
DEPTH0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM
DRIVE FACILITY ANGULAR SPACING IN DEG180.0
INTERNAL ANNULAR SERRATION NOT PROVIDED
SETSCREW NOTCH NOT PROVIDED
SPECIAL FEATURESSHOULDER PROJECTING FROM FLANGE END,1.771 IN. MAX. SHOULDER DIA. AND 0.055 IN. MIN. SHOULDER LG.
FSC APPLICATION DATATELESCOPE,ELBOW M118